Field Trips
Mid-Conference Field Trip (on July 22)
Pre/Post-Conference Field Trips
Mid-Conference Field Trip (on July 22)
Download a Guide for Mid-Conference Field Trip PDF (5.8Mb)
Course No.
Fee per person
Ibusuki Course: Visit to Kaimondake volcano and Ikeda caldera

included in the registration fee

Aira Course (A), Round trip of Aira caldera: Visit to Kirishima and Sakurajima volcanoes
Aira Course (B), Round trip of Aira caldera: Visit to Kirishima and Sakurajima volcanoes
*M2 and M3 courses stop at the same site. Only the visiting order is different.

Capacity is limited in each course.
Registration is on a first come, first served basis.

Those who wish to apply for the Mid-conference field trip (on July 22) should register online.

Pre-registration closed.

On-site registration is available till July 20 at the Registration Desk.
M1. Kaimondake volcano and Lake Ikeda
The Ibusuki Volcanic Area occupies the western half of the Ata caldera(Matumoto, 1943) at the mouth of the Kagoshima Bay, which is considered as the volcano-tectonic graben. The trip will provide special views of Lake Ikeda, Kaimondake and other post-caldera volcanoes within the caldera. Lava and overlying tephra layers from these volcanoes can be observed in the roadside outcrop on Usuyama (the eastern foot of Kiyomidake volcano). At the Fushime coast, there are wonderful views of cliffs of Ikeda pyroclastic flows, the volcanic neck Takeyama, the sand steam bath "Suna-mushi" and the Yamakawa geothermal power plant. We will also visit the archaeological museum "COCCO Hashimure", which is exhibiting archaeological properties with special reference to the disaster of Kaimondake volcano. On the way to Ibusuki, we will have a panoramic view of the Sakurajima volcano and Kagoshima city from Senganbira along the Ibusuki Skyline (mountain road).

Kaimondake volcano and Lake Ikeda
M2 & 3. Aira course
The trip will provide a special view of the Aira caldera and surrounding areas including Kirishima and Sakurajima volcanoes, which are located within the Kakuto and Aira calderas, respectively. They are post-caldera composite volcanoes ejecting lava flows associated with many tephra layers during the Late Quaternary. In addition, we will visit the Kirishima Shrine located in the southern foot of Kirishima volcano. The current red-painted main building of shrine was constructed in 1715. Finally, we visit the “Uenohara Jomon no mori (Archaeological museum)”, which is the remains of a 9500 year-old settlement. This one-day trip, we will enable us to understand how the southern Kyushu inhabitants have lived through several volcanic eruptions.

Pre-Conference Field Trips
Pre-Conference Field Trips
Calderas and active volcanoes in central to eastern Hokkaido July 13 - 19
Unzen and Aso volcanoes, central Kyushu, Japan: New lava dome climb and 1991-95 pyroclastic flows (Unzen) and active crater and one of the largest caldera in Japan (Aso) July 15 - 19
Suwanosejima- Lighthouse on the East China Sea: Ongoing strombolian activity and proximal facies of the 1813 eruption July 15 - 18
Post-Conference Field Trips
Active volcanoes in Northeast Japan July 26 - 30
Active volcano in central Japan: Asama Volcano July 26 - 29
Fuji and Hakone volcanoes: Typical Japanese stratovolcanoes July 25 - 28
Basaltic and rhyolitic island volcanoes in the Izu Islands July 26 - 29
Kirishima and Sakurajima volcanoes and their source calderas in southern Kyushu July 25 - 27
Kikai caldera and southern Kyushu: Products of a large silicic magmatic system July 25 - 29
Explore recent volcanism in the Kamchatka volcanic arc July 27 - Aug. 2
Changbaishan Tianchi volcano, the magnificent gift from the nature July 26 - 29
Capacity is limited in each course. Registration is on a first come, first served basis. The steering committee will accommodate the trips and will soon announce to applicants which course they can participate.

Online registration is not available for the Pre-Field Trips and Post Field Trips.

Those who wish to apply for the Pre-Conference Field Trips or Post-Conference Field Trips B1-B6 should fill in the application form (word file) and submit it to the IAVCEI 2013 by May 1, 2013. Those who can participate in each trip must pay the fee until May 15, 2013.

Cancellation Policy

For Post-Conference Field Trips B7 and B8, please contact each contact person directly. A deadline of the application for these trips will be April 1, 2013.
Application for Pre- and Post-Conference Field Trips closed.
Calderas and active volcanoes in central to eastern Hokkaido
Departure & Destination: Asahikawa; Kushiro Airport
Date: July 13 (Sat.) - July 19 (Fri.), 2013
Cost: JPY 100,000
Cost: Including transportation from Asahikawa to Kushiro Airport,
Cost: all meals and accommodations
Participants: 10 (min) - 15 (max)
Takeshi Hasegawa (Ibaraki Univ.),
Hiroshi Kishimoto (Asia Air Survey Co. Ltd)
and Mitsuhiro Nakagawa (Hokkaido Univ.)
Takeshi Hasegawa:
July 13 (Sat): Stay at Asahikawa city
July 14 (Sun): Tokachi-dake volcano trekking (block-and-ash flows, active craters, snow-melt lahars), stay at Sounkyo hot spring
July 15 (Mon): Ignimbrites from Akan volcano (composite caldera, proximal deposits of caldera-forming eruption, interfingering with exotic tephras), stay at Lake Akan
July 16 (Tue): Me-akan trekking (post-caldera activity, young lava flows, historic eruptions), stay at Kawayu spring
July 17 (Wed): Ignimbrites from Kutcharo caldera and post-caldera volcanoes (emplacement of ignimbrite, magmatic processes of caldera-forming eruption, active lava dome), stay at Kawayu spring
July 18 (Thu): Mashu volcano products (Holocene caldera, zoned magma chamber, magma-water interaction), stay at Kushiro city
July 19 (Fri): Subaqueous pyroclastic flows (short stop), head to Kushiro airport in the morning

Hokkaido is situated at the junction of two arc-trench systems, the NE Japan and Kuril arcs, both of which have experienced intense volcanism since late Miocene. We will visit central and eastern Hokkaido, where locates at the southern end of the Kuril arc. We will focus on various types of younger volcanoes, calderas (Akan, Kutcharo and Mashu), a volcanic complex (Taisetsu-Tokachi volcano group), and post-caldera volcanoes (Me-Akan and Atosanupuri). These volcanoes have erupted tephra deposits that are widely distributed in Hokkaido. We will investigate these deposits to reconstruct the eruption sequences and magmatic processes. In addition, we will climb Tokachi-dake and Me-Akan volcanoes to investigate their respective structures. We will also focus on the snow-melt lahar associated with the AD 1926 eruption of Tokachi-dake volcano, which caused severe hazards and killed 144 people.

The participants are required to book into a hotel at Asahikawa on July 13 (Sat.) and will be sharing rooms from July 14 to 18. Further details of the field trip will be announced after the application process.

Photo. Me-akan volcano (left) and the outcrop of the Kutcharo pyroclastic flow deposits (right)

Unzen and Aso volcanoes, central Kyushu, Japan: New lava dome climb and 1991-95 pyroclastic flows (Unzen) and active crater and one of the largest caldera in Japan (Aso)
Departure & Destination: Kumamoto; Kumamoto
Date: July 15 (Mon.) - July 19 (Fri.), 2013
Cost: JPY 65,000
Cost: Including transportation from Kumamoto to Kumamoto,
Cost: all accommodations and meals (except for first and second day's dinners)
Participants: 18 (min) - 24 (max)
Shinji Takarada (AIST),
Yasuo Miyabuchi (Kumamoto Univ.),
Hideo Hoshizumi (AIST)
and Takeshi Matsushima (Kyushu Univ.)
Shinji Takarada:
July 15 (Mon): JR Kumamoto Station (9:15) and Kumamoto Airport (10:00) - Oyatsu (Aso-4 ignimbrite) - Namino (Aso central cone tephra) - Daikanbo (overview) - Kario (Aso-4 lag breccia)
July 16 (Tue): Nakadake central crater - Kusasenri - Komezuka (scoria cone) - ferry to Shimabara
July 17 (Wed): Unzen Disaster Museum - Lahar Museum – Kita-Kamikoba (1991 block-and-ash flow and surge deposits) - Onokoba school (September 15, 1991 surge deposit) – Taruki plateau (Taruki debris avalanche deposit) - Minami Senbongi (1993 block-and-ash flow and surge deposits) - Unzen hot spring
July 18 (Thu): Nita Pass (viewing point) - aerial tramway - Unzen (new lava dome climb) – Unzen fumarolic area - Unzen hot spring
July 19 (Fri): Kureishibaru (19 ka low-aspect-ratio PF) - 1792 lava flow - Mutsugi (4 ka PF) - overview and 1792 Mayuyama debris avalanche deposit - ferry - JR Kumamoto Station (15:05)

This trip will visit two active volcanoes, Unzen and Aso, in central Kyushu, southwestern Japan, to observe volcanic deposits and study their impacts on the residents around the volcanoes. The 1990-1995 eruption of Unzen volcano resulted in one of Japan’s largest volcanic disasters in the 20th century. Shimabara city and its environs were damaged by repeated pyroclastic flows and lahars. We will climb the new lava dome, visit the devastated area, and observe the 1991-1995 dome-collapse type block-and-ash pyroclastic-flow and lahar deposits. Furthermore, we will examine older deposits around the volcano and discuss the growth history starting from 500 ka. 
Aso volcano, located about 70 km ENE of Unzen, is one of the most beautiful caldera volcanoes in the world. The caldera, which is 25 km north-south and 18 km east-west in diameter, was formed by four gigantic pyroclastic-flow eruptions from 270 to 90 ka. The post-caldera central cones initiated their eruptive activity just after the last caldera-forming eruption and have produced large volumes of fallout tephra layers and lava flows. Nakadake volcano, the only active central cone, is one of the most active volcanoes in Japan. Its recent activity is characterized by ash and strombolian eruptions and phreatic or phreatomagmatic explosions. This field trip will focus on the gigantic pyroclastic-flow deposits related to the caldera formation and the explosive and effusive post-caldera activity of the volcano.

Field boots and gloves are needed for the new lava dome climb. Rain gear and sun protection cream are highly recommended.

Meeting place: JR Kumamoto Station (9:00) or Kumamoto Airport (9:45) on July 15.
Transportation from JR Kumamoto Station or Kumamoto Airport (July 15) to JR Kumamoto Station (July 19), round trip by ferryboat from Kumamoto to Shimabara, aerial tramway at Unzen summit area, Unzen Disaster Museum entrance fee, and all accommodations and meals (except dinner on the 1st and 2nd nights) are included.

Photo. Heisei-Shinzan new lava dome and Mayuyama lava dome (behind),
Unzen volcano (left) and aerial view of Aso caldera (right)

Suwanosejima- Lighthouse on the East China Sea: Ongoing strombolian activity and proximal facies of the 1813 eruption
Departure & Destination: Kagoshima; Yakushima
Date: July 15 (Mon.) - July 18 (Thu.), 2013
Cost: JPY 70,000
Cost: Including transportation during excursion from Kagoshima
Cost: to Yakushima, all meals and accommodations
Participants: 10 (min) - 15 (max)
Taketo Shimano (Fuji Tokoha Univ.),
Nobuo Geshi (AIST) and
Hiroshi Yakiwara (Kagoshima Univ.)
Taketo Shimano:
July 15 (Mon): overnight at Kagoshima (Ferry Toshima)
July 16 (Tue): Suwanosejima (10:00 pick-up by car), visit some outcrops of the 1813 eruptive deposits around the village and go to a local school for an introduction to the Suwanosejima culture and to the volcano by native students and field trip leaders, welcome party
July 17 (Wed): Climb Otake volcano to see the active crater and the proximal deposit from the 1813 eruption and recent activity
July 18 (Thu): pick-up by car - Port (departure), cruise around Suwanosejima and Tokara Islands (Nanashima 2 ship) - Yakushima (afternoon)

This field trip will visit Suwanosejima volcanic island, one of the most active volcanoes in Japan and sometimes called the "Lighthouse of East China Sea." This volcano has been active for more than 50 years, with strombolian to vulcanian activities that emit ash and ballistic ejecta. We will climb the summit of Mt. Otake, 799 m asl, to observe the current activities in the crater (very quiet as of October 2012). We will also visit some of the geophysical monitoring sites in the proximal area and examine the deposit from the 1813 eruption, the largest known eruption of this island. We will focus on some aspects of the proximal facies of the 1813 sub-plinian eruption, consisting of clastogenic lava flows and agglutinate, as well as the distal scoria-fall deposits.
We will take the local ferry “Toshima” from Kagoshima to Suwanosejima island. This boat will pass along the volcanic islands of the Kirishima-Ryukyu arc. We will return to Yakushima aboard the chartered boat “Nanashima 2,” which will go around Suwanosejima, allowing us to see coastal volcanic deposits, and then cruise along the volcanoes of the Tokara islands toward Yakushima island; this area is one of the most popular natural heritage sites in Japan.

Note: The boat trip to Suwanosejima is frequently cancelled or its schedule changed due to bad sea conditions caused by typhoons. This field trip may also be cancelled, even immediately before it starts, if there is a risk of the boat trip being cancelled due to stormy weather. Field boots are needed for the climb. Rain gear and sun protection cream are also highly recommended. There are no shops and banks in Suwanosejima island, only some drink vending machines. The trip fee covers all three meals (mainly Japanese-style seafood) and 4 liters of water daily. Participants should bring any other provisions they would need. The trip ends on arrival at Miyanoura port in Yakushima island (afternoon of July 18). Participants can choose to return immediately to Kagoshima or stay overnight at Yakushima island, which is a famous world heritage site because of its deep forest of old cider. There are several direct ship connections between Yakushima and Kagoshima. Additional information about the ship to Kagoshima, as well as optional tours and accommodations in Yakushima, will be provided.

Photo. The summit crater of Suwanosejima volcano (left) and tephra layers of AD 1813 eruption (right)
Active volcanoes in Northeast Japan
Departure & Destination: Koriyama; Akita
Date: July 26 (Fri.) - July 30 (Tues.), 2013
Cost: JPY 75,000
Cost: Including transportation from Koriyama to Akita,
Cost: all meals (except for lunch) and accommodations.
Participants: 5 (min) - 15 (max)
Masao Ban (Yamagata Univ.),
Tsukasa Ohba (Akita Univ.) and
Akihiko Fujinawa (Ibaraki Univ.)
Masao Ban:
July 26 (Fri): Meet at JR Koriyama Station (9:00) - Bandai volcano - (1) Okinajima debris avalanche deposit - (2) the Bandai 1888 Eruption Memorial Museum - (3) the amphitheater formed in Bandai by the explosive sector collapse in AD 1888 - observation of the outcrop of the debris avalanche - hotel at the eastern foot of Azuma volcano
July 27 (Sat): Depart from hotel - Azuma volcano - (1) trekking around the c. 6ka Azuma-Kofuji pyroclastic cone (fallout ejecta, including bread-crust bombs, agglutinate, and rootless lava, are observable) - (2) trekking around the Ohana crater (gigantic bread-crust bomb ejected in AD 1331) - hotel at the eastern foot of Zao volcano
July 28 (Sun): Depart from hotel - Zao volcano - (1) tephra layers from 30ka~recent activities - (2) Goshikidake pyroclastic cone (< c. 2ka) and Okama crater lake (< AD1227) with AD 1895 hydrothermal pyroclastic eruption deposits - (3) pyroclastic density current deposits of 30ka~recent activities - (4) optional viewing of calc-alkaline basaltic lava flows – hotel at the eastern foot of Iwate volcano
July 29 (Mon): Depart from hotel - (1) Yakehashiri lava of Iwate volcano - (2) hydrothermal eruption craters on the summit of Hachimantai volcano - (3) trekking on Akita Yakeyama volcano and viewing of hydrothermal eruption deposits - (4) observation of the active geothermal field around the Tamagawa hot spring - hotel near Lake Tazawako
July 30 (Tue): Depart from hotel - (1) pyroclastic deposits near Tazawako caldera, with optional visit to a museum - (2) distant view of Megata and Toga volcanoes, with optional approach to the Megata maar lakeside - (3) outcrops of pyroclastic deposit from the Toga tuff ring and/or the Miocene pillow lava - JR Akita station (ca. 15:00) – on request, head to Akita airport (ca.16:00)

Northeast Japan, a mature island arc, has many stratovolcanoes along with some other volcano types. Eighteen of these volcanoes are active. Most of the stratovolcanoes in NE Japan are thought to follow a general evolutional course consisting of (1) cone building, (2) caldera collapse, and (3) post-caldera stages. We will visit the following six active volcanoes and observe the geologic features of their activities during various evolutional stages: the Iwate volcano, which is in the cone-building stage; the Bandai volcano, which is in the caldera-forming stage; and the Azuma, Zao, Akita-Yakeyama, and Hachimantai volcanoes, which are in the post-caldera stage. The latest eruptions took place in AD 1888 at Bandai, in AD 1977 at Azuma, in AD 1940 at Zao, in AD 1919 at Iwate, and in AD 1997 at Akita-Yakeyama. Among these, the 1888 eruption in Bandai is famous for a sector collapse that accompanied a debris avalanche phenomenon, which was the first ever reported in the world. Around Akita-Yakeyama, one can enjoy a spectacular view of a geothermal field. We will also visit Ichinomegata maar (80 to 60 ka), which features mantle xenoliths, and the Toga tuff ring.

Photo. Bandai volcano (left) and the summit crater of Zao volcano (right)

Active volcano in central Japan: Asama Volcano
Departure & Destination: Sakudaira; Karuizawa
Date: July 26 (Fri.) - July 29 (Mon.), 2013
Cost: JPY 67,000
Cost: Including transportation from Sakudaira station to Karuizawa station,
Cost: breakfasts and one evening meal, and accommodations.
Participants: 10 (min) - 20 (max)
Maya Yasui, Masaki Takahashi (Nihon Univ),
Shigeo Aramaki (Inst. Env. Sci, Yamanashi) and
Takashi Tsutsumi (Asama Jomon Museum)
Maya Yasui:
July 26 (Fri): Assemble at Sakudaira station (Nagano Shinkansen) at 10 am. Short lecture on volcanology, volcanic hazards, and archaeology at Asama Jomon Museum. Brief stops around Komoro area to see pumice flow deposits of ca.13ka.
July 27 (Sat): One-day trek to Mt. Kurofu (2400m) to discuss the history of Asama volcano. The excursion will reach the edge of a gigantic horseshoe-shaped crater formed by a sector collapse in ca. 24 ka.
July 28 (Sun) and 29 (Mon): Viewing of many outcrops that provide evidence for the discussion of the 1783 eruption style, including deposits of pumice fall, pyroclastic flows, and clastogenic lava. The mysterious Kambara pyroclastic flow/debris avalanche deposit of the 1783 eruption, which includes huge blocks up to 60m in diameter, will also be investigated. An archaeological excavation site buried by the devastating flow will be visited.

The excursion will end at the Karuizawa station (Nagano Shinkansen) on the evening of July 29.

Asama volcano, located near the Tokyo metropolitan area, is one of the most active volcanoes in Japan. It has had frequent vulcanian eruptions since the beginning of the 20th century, and small eruptions recently occurred in AD 2004 and 2009. We will investigate the eruptive history of the volcano, including stratovolcanoes, pyroclastic cones, and lava domes. Focusing on its famous, great eruption in AD 1783, we will discuss the eruption style based on the latest research on the proximal depositional processes of pyroclastic materials to form pyroclastic cones and clastogenic lava during a plinian eruption. We will also discuss how the volcanic edifice grows through such proximal processes.

Photo. Asama volcano (left) and its summit crater (right)

Fuji and Hakone volcanoes: Typical Japanese stratovolcanoes
Departure & Destination: Haneda Airport; Narita Airport
Date: July 25 (Thu) - July 28 (Sun), 2013
Cost: JPY 50,000
Cost: Including transportation from Haneda to Narita Airport,
Cost: all meals and accommodations.
Participants: 10 (min) - 20 (max)
Takahiro Yamamoto, Akira Takada (AIST) and
Kazutaka Mannen (Hot Spring Research Institute of Kanagawa Prefecture)
Takahiro Yamamoto:
July 25 (Thu): Assemble at Haneda Airport - proceed to Hakone
July 26 (Fri): Walk to Owakudani, an active fumarole of Hakone volcano - drive to the south flank of Fuji volcano - hike to the AD 1707 Hoei crater - observe tephra deposits at the southeast flank of Fuji - proceed to Yamanakako, Fuji
July 27 (Sat): Drive to the north flank of Fuji volcano - observe the AD 864-866 lava flow - visit the Fuji Museum – return to Yamanakako
July 28 (Sun): Depart from Yamanamako - arrive at Narita International Airport in the afternoon

Fuji and Hakone volcanoes, on the northern end of the Izu-Bonin-Mariana arc, are famous sightseeing spots in Japan because of the great views, hot springs, and many amusement facilities in their surrounding areas. However, both Fuji and Hakone are active volcanoes with potential hazards. The field trip will visit the AD 1707 Hoei crater and the AD 864-866 lava flows of Fuji volcano and the active fumarole vent of Hakone volcano.
  The AD 1707 plinian eruption was the most explosive activity of Fuji volcano. The eruption began at the SE flank, and its fallout was dispersed eastward toward Tokyo. The volume of tephra was estimated to be 0.7 km3 DRE. The AD 864-866 lava flow was one of the most voluminous in Fuji volcano. The lava was extruded from fissure vents at the NW flank, and its volume reached 1.5 km3 DRE. Hakone volcano, located east of Fuji, is accompanied by a 10-km-diameter caldera and central cones. There are many hot springs within the caldera. We will visit the Owakudani tourist site and observe the fumarolic activity of Hakone volcano.

Photo. Mt. Fuji and the Hoei crater

Basaltic and rhyolitic island volcanoes in the Izu Islands
Departure & Destination: Tokyo; Tokyo
Date: July 26 (Fri.), - July 29 (Mon.), 2013
Cost: JPY 105,000
Cost: Including transportation, all meals (except breakfast on July 26)
Cost: and accommodations.
Participants: 10 (min) - 20 (max)
Masashi Tsukui (Chiba Univ.),
Yoshihisa Kawanabe (AIST),
Jun'ichi Itoh (AIST),
Koichiro Saito (JMA) and
Hidefumi Watanabe
(Tokyo Metropolitan Government).
Masashi Tsukui:
July 26 (Fri): 7:30 a.m. at Takeshiba Pier Passenger Terminal (Tokyo) - high-speed jet ferry to Izu-Oshima - Mihara crater, 1778 central scoria cone, and 1986 lava flow - crater chains in 1986 fissure eruption - Motomachi (1986 lava flow)
July 27 (Sat): "The great road cut" of Izu-Oshima tephra - 9th century Habu maar - Pre Izu-Oshima basement volcano - monitoring system for Izu-Oshima - Izu-Ōshima Museum of Volcanoes
July 28 (Sun): "Akappage" (volcano with eroded flank) - high-speed jet ferry to Niijima - Fuji-mi Pass viewing point overlooking Niijima island (lunch) - Wakago area (basaltic hydromagmatic explosion breccia)
July 29 (Mon): Habushi-Ura (rhyolitic pyroclastic flow and surge) - Omine (rhyolitic pyroclastic cone) - Mukaiyama (rhyolitic lava dome) - high-speed jet ferry - 6:00 p.m. arrival at Takeshiba Pier (Tokyo)

This trip visits two topographically and petrologically contrasting active volcanoes in the Izu islands, the basaltic Izu-Oshima and the rhyolitic Niijima volcano. Izu-Oshima has erupted more than a hundred times during the last 20,000 years. Its latest 12 eruptions in the past 1,500 years, including the caldera formation, have been well investigated. We will view a spectacular tephra sequence, the caldera topography, and a chain of fissure vents. In view of the continuing inflation of the volcanic edifice on the island, we will visit the well-equipped observation stations and see how data are monitored in preparation for any forthcoming eruption. Niijima volcano consists of more than 16 rhyolite lava domes. The recent products of dome-building eruptions, such as pyroclastic surge and flow deposits, fallout pumice, and dome lava, are exposed along the sea cliff and quarry. We will closely observe the pyroclastic materials and their depositional structures, which suggest eruptions in the shallow submarine to subaerial environment.

Photo. Niijima island (left) and tephra layers of Izu-Oshima volcano (right)

Kirishima and Sakurajima volcanoes and their source calderas in southern Kyushu
Departure & Destination: Kagoshima; Kagoshima
Date: July 25 (Thu.) - July 27 (Sat.), 2013
Cost: JPY 50,000
Cost: Including transportation from Kagoshima to Kagoshima,
Cost: all meals and accommodations.
Participants: 10 (min) - 20 (max)
Tetsuo Kobayashi (Kagoshima Univ.),
Takeshi Tameguri (Kyoto Univ.) and
Mitsuru Okuno (Fukuoka Univ.)
Tetsuo Kobayashi:
July 25 (Thu): Kagoshima to Sakurajima volcano and then back to Kagoshima - visit some view points, and observe the volcanic products of the 1914 eruption - visit the Sakurajima Volcano Research Center of Kyoto University - stay at Kagoshima
July 26 (Fri): Kagoshima to Kirishima volcano - lacustrine deposits in the Kakuto caldera, small craters and lava flows, and the pumice fall deposit of the 2011 eruption of Shinmoedake volcano - stay at Maruo hot spring in the Kirishima area.
July 27 (Sat): Kirishima to Tarumizu - thick plinian pumice deposit and overlying ignimbrites of the ca. 30 ka Aira eruption, and a clastic dike penetrating those tephras, which was probably formed during the 7.3 ka Akahoya eruption of the Kikai caldera - take the ferry to Kagoshima - Kagoshima Chuo-eki Station - travel by Japan Railway or airplane to your next destination.

This trip covers two active volcanoes in southern Kyushu, Kirishima and Sakurajima, where volcanic deposits and their impacts on residents can be observed. We also look at some large-scale ignimbrites and their source calderas. Sakurajima is a post-caldera volcano of the Aira caldera, which produced a vast ignimbrite plateau in southern Kyushu in ca. 30 cal KBP. Kirishima consists of more than 20 vents, which are also post-caldera volcanoes of the Kakuto caldera. Shinmoedake, one of the active post-caldera volcanoes, erupted sub-plinian pumice in January 2011. We can observe the new tephra deposit at the foot of the volcano.

Participants are required to extend their stay for one more night, i.e., on July 25, by yourself.

Photo. Sakurajima volcano (left) and the summit crater of Shinmoedake volcano (right)

Kikai caldera and southern Kyushu: Products of a large silicic magmatic system
Departure & Destination: Kagoshima; Kagoshima
Date: July 25 (Thu.) - July 29 (Mon.), 2013
Cost: JPY 90,000
Cost: Including transportation, all meals, and accommodations.
Participants: 14 (min) - 17 (max)
Fukashi Maeno (Univ. Tokyo),
Keiko Suzuki (Kobe Univ.) and
Shoichi Kiyokawa (Kyushu Univ.)
Fukashi Maeno:
July 25 (Thu): Meet at ferry terminal (South Pier of Kagoshima harbor) - proceed to Satsuma Iwo-jima island by ferryboat - observe the pyroclastic fallout, flow, and surge deposits of the 7.3 ka Kikai-Akahoya eruption - stay on Satsuma Iwo-jima island
July 26 (Fri): Observe the eruptive products (lava flows and pyroclastic fallout, flow, and surge deposits) of the rhyolitic Iwo-dake and the basaltic Inamura-dake volcanoes, which were formed after the caldera-forming eruption - visit enjoy the hot spring - stay on Satsuma Iwo-jima island.
July 27 (Sat): Take the ferryboat and minibus to Ibusuki region, southeast of Satsuma peninsula - observe the distal facies of the pyroclastic fallout and flow deposits of the 7.3 ka Kikai-Akahoya eruption and the pyroclastic deposits of explosive silicic eruptions in this area - visit an archaeological museum exhibiting objects related to volcanic eruptions and their impacts in the area - stay in Ibusuki.
July 28 (Sun): Take the ferryboat and minibus to Minami-Osumi region, in the southern part of Osumi peninsula - observe the pyroclastic fallout and flow deposits of the 7.3 ka Kikai-Akahoya eruption - proceed to and stay in Kagoshima city
July 29 (Mon): Depart for respective destinations

The Kikai caldera is one of the most active volcanoes in Japan. Most of the caldera is now submerged except for two major islands, Satsuma Iwo-jima and Take-shima. The last caldera-forming eruption, called the “Akahoya eruption,” occurred 7,300 years ago. This eruption produced voluminous pyroclastic flows (Koya ignimbrite) and widespread ashfall (Akahoya ash), which had devastating impacts on the culture and natural environment of western Japan. After this eruption, new volcanoes formed inside the caldera through bimodal magmatism. One of young silicic cones, Iwo-dake, has continued to emit volcanic gases for hundreds of years. On this field trip, we will visit Satsuma Iwo-jima island and southern Kagoshima area to observe the eruptive products from the Kikai caldera, mainly focusing on pyroclastic deposits (plinian fallouts and ignimbrites with various lithofacies) from the Akahoya eruption, and young tephra and lava flows from post-caldera volcanoes. Two young volcanoes (the silicic Iwo-dake and the basaltic Inamura-dake) in Satsuma Iwo-jima island make for a spectacular scenery. The recent activities, deposits, and current landscape represent the evolution of a large silicic magmatic system beneath the sea. We will also visit silicic pyroclastic deposits from the Ikeda caldera in Ibusuki area.

Note: Stay at a Minshuku (Japanese-style accommodation) in Satsuma Iwojima island. The final schedule will be decided depending on the weather and sea conditions, which are basically good during this season, except for occasional typhoons.

Photo. Satsuma Iwo-jima volcano

Explore recent volcanism in the Kamchatka volcanic arc
Departure & Destination: Petropavlovsk-Kamchatsky, Russia; Petropavlovsk-Kamchatsky, Russia
Date: July 27 (Sat.) - August 2 (Fri.), 2013
Cost: US$ 3,500 (for 6) – 1,900 (for 16)
Cost: Including transportation, all meals, and accommodations (hotels and tents).
Participants: 6 (min) - 16 (max)
Vera Ponomareva (Institute of Volcanology and Seismology, Russia) and others
Vera Ponomareva:

Martha Madsen:

  The Kamchatka peninsula hosts a highly active and explosive volcanic arc, which forms the northwestern part of the Pacific Ring of Fire. Our field excursion will concentrate on the Holocene volcanism, with a special focus on recent tephra deposits. The highlights of the excursion include trips to the most active and prolific volcanoes of the arc. Near the city, we will be able to see the Avachinsky and Koriaksky "home volcanoes" and examine their Holocene deposits. Then we will drive 500 km northward toward the Kliuchevskoi volcanic group, which comprises the largest Kamchatka volcanoes. Kliuchevskoi (4850 m asl) is one of the most productive volcanoes on Earth, erupting an average of about 90 Mt of magma every year. Ash clouds shooting from the volcano reach an altitude of ~20 km and regularly affect the air traffic between SE Asia and North America. Tephra from Kliuchevskoi, as well as other volcanoes, has been accumulating on its slopes over the last 12 kyr at a rate of ~1 mm/yr. This tephra sequence represents one of the longest and highest resolution record of explosive volcanism in Kamchatka. We will examine tephra deposits and visit a number of Kliuchevskoi’s flank cinder cones and their lava flows. Then we will go to the Tolbachik monogenetic lava field, from where we can climb Plosky Tolbachik volcano (3085 m asl) to see its summit caldera and then visit the cinder cones and lava flows of the monogenetic field, including those formed during the 1975 eruption. The trips will be guided by volcanologists from the Kamchatka Institute of Volcanology and Seismology.
  Air carriers from Japan to Kamchatka: Vladivostok Airlines to Vladivostok, overnight stay, and then proceed to Petropavlovsk-Kamchatsky. Airport transfers to/from guest houses in Yelizovo on arrival/departure. Accommodation: Guest houses in Yelizovo, on arrival and before departure (twin rooms, shared baths). City tour and visit to Paratunka geothermal spa area. Transportation by chartered bus on the main roads and by truck on the slopes of the volcanoes. Guest house accommodation in Kozyrevsk village (near Tolbachik). Tent camping on the volcanoes. Easy short hikes to tephra outcrops and optional more serious hike to Plosky Tolbachik. More excursions are available on request and at an additional cost, including to the Valley of Geysers, the Uzon caldera, the Kurile Lake caldera, and a marine tour.

Contact:  Martha Madsen, Explore Kamchatka,,
The costs depend on the number of participants. Minimum group size of 6, maximum of 16.  Price per person for a group of 6: $3,497. Price per person for a group of 16: $1,899.
The costs include: airport transfers, accommodation in Yelizovo and Kozyrevsk, meals, transportation, visa assistance, all permits, fees, English-speaking staff, and tents.

Photo. Kliuchevskoi volcano group (left) and Tolbachik volcano (right)

Changbaishan Tianchi volcano, the magnificent gift from the nature
Departure & Destination: Beijing, China; Beijing, China
Date: July 26 (Fri.) - July 29 (Mon.), 2013
Cost: US$ 1,000
Cost: Including round-trip air tickets from Beijing to Changbaishan airports,
Cost: ground transportation, all meals and accommodations
Participants: 10 (min) - 30 (max)
Jiandong XU, Haiquan
WEI (Institute of Geology, China Earthquake Administration)
Jiandong Xu:
July 26 (Fri): Arrival at Beijing - take flight CZ6154 to Changbaishan - stay at the Changbaishan Volcano Observatory (CZ6154 is a seasonal flight, the departure time from Beijing is in between 6:00 pm to 10:00 pm)
July 27 (Sat): Visit the summit of Tianchi volcano and the caldera lake - observe some key deposits associated with the millennium eruption and other eruption events before and after it - afternoon visit to the waterfall, hot springs, and monitoring tunnel on the northern slope of the volcano.
July 28 (Sun): Visit the western slope of the volcano, in which are found a ~100 m-deep pyroclastic valley and some outcrops of lava flow, lahar, and pyroclastic deposit, along with the remains of trees that died during the millennium eruption
July 29 (Mon): Go to the east of the volcano to look at an ashfall deposit (B-Tm) from the millennium eruption - visit some unique cultural sites, such as Kim Il-Sung island at the national border, the Manchu ancestral birthplace in Changbai Mountain District, etc. - afternoon seminar at the Changbaishan Volcano Observatory on the current active state of Changbaishan volcano based on monitoring data - depart for Beijing in the evening

Changbaishan volcano is the biggest and has the greatest potential eruption risk among all the active volcanoes in China. Tianchi (Sky Lake), the highest volcanic pond in the world at an elevation of 2,744 meters, is situated in the 5-kilometer-wide caldera known as Mount Paektu in Korea. During this trip, we will visit the caldera summit, a waterfall on the north flank, a pyroclastic valley, an underground forest, a stone forest formed in the pyroclastic deposit, etc. Finally, we will stop at the Changbaishan Volcano Observatory for a brief seminar on the current volcanic activity of Changbaishan volcano based on monitoring data.

Photo. The summit caldera, Tianchi, Changbaishan volcano

Cancellation Policy
Written notification of cancellation must be received by the IAVCEI 2013 Registration Desk () before a refund can be issued (notification by phone is not accepted). An administrative charge will be deducted from the amount based on the date the cancellation letter is received. All refunds will be processed after the conference.

Field trip fee (A1-A3 and B1-B6)
Before June 15, 2013: A complete refund minus a JPY 10,000 administrative charge (per participant) will be given.
Before July 2, 2013: 50% refund.
After July 3, 2013: No refund will be given.
If you have any questions, please contact

IAVCEI 2013 Registration Desk
Event & Convention House, Inc.

Shuwa-Okachimachi Bldg. 8F
4-27-5 Taito, Taito-ku, Tokyo 110-0016, Japan
Phone: +81-3-3831-2601, Fax: +81-3-5807-3019