A1 Calderas and active volcanoes in southwestern Hokkaido
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Leaders: M. Nakagawa (nakagawa@ep.sci.hokudai.ac.jp), R. Furukawa and M. Yoshimoto. Duration 5 days. Cost JPY86,000. Limited to 20 participants.
Departs from Hakodate on Wednesday June 25 and arrives at Sapporo on Sunday June 29.

This trip will focus on two calderas (Toya and Shikotsu) and related large-scale pyroclastic flows. We will discuss eruption processes of caldera-forming eruptions. We will also visit summit and flank craters of three active volcanoes (Hokkaido-Komagatake, Usu and Tarumai) and investigate historic eruptive products (lava domes, debris avalanche, pyroclastic falls and flows and lahars) and crustal deformation. These volcanoes restarted their eruptive activities with large plinian eruptions in the 17th century, and have continued their eruptions intermittently until now. We will also focus on the 2000 Usu eruption in detail. Be prepared for some moderate hiking.

A2 Asama and Fuji volcanoes --> CANCELLED
Leaders: K. Endo (endo@chs.nihon-u.ac.jp), T. Koyaguchi, N. Miyaji, M. Takahashi, S. Umino and M. Yasui. Duration 5 days. Cost JPY80,000. Limited to 30 participants.
Departs from Karuizawa on Wednesday June 25 and arrives at Tokyo on Sunday June 29.

This field trip will focus on the big historical eruptions of two famous active volcanoes. At Asama, we will discuss the emplacement mechanisms of pyroclastic falls, flows and clastogenic lavas and products of the explosive eruption in 1783 A.D. At Fuji, we will visit the area of pyroclastic fall and its craters produced by the explosive flank eruption in 1707 A.D. and the lava flow field produced by the effusive eruption in 864 A.D.

A3 Unzen and Aso volcanoess --> CANCELLED
Leaders: S. Nakada (nakada@eri.u-tokyo.ac.jp), H. Hoshizumi, Y. Miyabuchi, Y. Sudo and H. Shimizu. Duration 5 days. Cost JPY80,000. Limited to 30 participants.
Departs from Fukuoka on Wednesday June 25 and returns to Fukuoka on the morning of Sunday June 29.

This field trip will focus on explosive and effusive eruption products generating a gigantic subsidence caldera and volcanic graben. The drilling site of the conduit for the latest eruption at Unzen and volcano observatories at Aso and Unzen will be visited.

A4 Sakurajima volcano and pyroclastic deposits in southern Kyushus --> CANCELLED
Leaders: T. Kobayashi (koba@sci.kagoshima-u.ac.jp), K. Ishihara and K. Suzuki-Kamata. Duration 4 days. Cost JPY58,000. Limited to 20 participants.
Departs from Kagoshima Airport on Thursday June 26 and returns to the same place on the morning of Sunday June 29. The accommodation for three nights is at the same hotel in Kagoshima City.

We will visit some Quaternary pyroclastic deposits and their source calderas. Depositional features of different scales of ignimbrites from Aira, Ata, and Ikeda calderas will be examined. We will also visit the active volcanoes Sakurajima and Kaimondake. Travel by bus with easy to moderate walks; temperatures up to 30°C. We may experience some heavy rain showers during the trip because of the rainy season.

A5 Active volcanoes in the Philippines - Mayon, Pinatubo and Taal
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Leaders: E. Listanco, E. Corpuz, M. Lagmay and S. Catane (sgcatane@yahoo.com). Duration 6 days. Cost US$650 (excluding connection to Legaspi City, but including transfer flight from Legaspi-Manila). Limited to 20 participants.
Departs from Legaspi City Monday afternoon, June 23 and arrives at Ninoy Aquino International Airport (Manila) Sunday morning, June 29.

Highlights ofthe field trip include the observation of the 2000-2001 deposits of Mayon Volcano; options to hike to the Pinatubo crater or a flight over Pinatubo volcano; and an overview of Taal Volcano and its caldera. We expect fantastic views, physically strenuous hiking in some places and potentially wet weather.

A6 Active faulting along the Median Tectonic Line --> CANCELLED
Leaders: A. Okada (okada@kugi.kyoto-u.ac.jp), H. Tsutsumi and H. Goto. Duration 4 days. Cost JPY65,000. Limited to 30 participants.
Departs from Matsuyama Thursday June 26 and arrives at Osaka (Itami) Airport on the afternoon of Sunday June 29.

This field trip will examine geologic expressions of the Median Tectonic Line, one of the most active faults onshore Japan. We will also visit a coseismic surface rupture site associated with the 1995 Kobe earthquake.

B1a Usu 2000 eruption
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Leaders: T. Ui (ui@ep.sci.hokudai.ac.jp), M. Nakagawa and S. Takarada. Cost JPY6,000. Limited to 135 participants.
Departs from and returns to Sapporo on Saturday July 5.

This trip will focus on the 2000 eruption of Usu volcano. We will visit new craters, faults, and the geothermal area formed during the eruption as well as the lahar disaster area and the Mimatsu Memorial Museum.

B1b Usu 2000 eruption
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Leaders: T. Ui (ui@ep.sci.hokudai.ac.jp) and S. Takarada. Cost JPY6,000. Limited to 90 participants.
Departs from and returns to Sapporo on Sunday July 6.

Same as B1a.

B2 Usu 2000 eruption --> FULLY RESERVED
Leaders: H. Okada (okada@uvo.sci.hokudai.ac.jp) and H. Oshima. Cost JPY26,000. Limited to 45 participants.
Departs from Sapporo on Saturday July 5 and returns to Sapporo on Sunday July 6.

This inter-symposium excursion will focus on eruption prediction and hazard mitigation. Major sites of historical eruptions, lava domes, damage/recovery and observatory/museum will be visited. Stay at Toyako Onsen Spa and enjoy volcanic treasures and fireworks on the caldera lake. Moderate short climbing will require good shoes and a jacket.

B3 Subaqueous Volcanic Rocks in the Shakotan Peninsula --> FULLY RESERVED
Leaders: H. Yamagishi (hiroy@env.sc.niigata-u.ac.jp), R. Cas, W. Hirose and T. Yasuda. Cost JPY5,500. Limited to 25 participants.
Departs from and returns to Sapporo on Saturday July 5.s

This excursion introduces Neogene subaqueous, andesitic successions, feeder dikes in the Oshoro Peninsula. On the way back to Sapporo, we will visit the Fugoppe cave, a national heritage site characterized by wall engravings dating back 2000 years.

C1 Taisetsu-Tokachi volcanic chain, southern end of Kurile arc, central Hokkaido --> CANCELLED

C2 Deep-seated plutonic and metamorphic rocks of the Hidaka collision zone, Hokkaido --> CANCELLED
Leaders: K. Arita (arita@ep.sci.hokudai.ac.jp), K. Niida and J. Maeda. Duration 4 days. Cost JPY73,000. Limited to 25 participants.
Departs from Sapporo on Saturday July 12 and arrives at Shin-Chitose Airport (or Sapporo) on Tuesday July 15.

This trip will focus on plutonic and granulite-facies metamorphic rocks of the up-thrust arc-like crustal sequence, metamorphosed ophiolitic rocks and the Horoman peridotite in the Hidaka Mountains. Physically strenuous hiking in some places.

C3 Tsunami deposits, damage and reconstruction in Okushiri Island and Uchiura Bay
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Leaders: Y. Nishimura (nishi@eos.hokudai.ac.jp), F. Imamura and K. Satake. Duration 3 days. Cost JPY45,000. Limited to 80 participants.
Departs from Sapporo Friday July 11 and returns to Sapporo on Sunday July 13.

We will visit Okushiri Island on the 10th anniversary of the July 12 1993 southwest Hokkaido earthquake, which caused devastating damage on the island. We will examine the reconstruction of the town and counter plans for future tsunamis. We will also visit sites in Uchiura bay where deposits from a volcanic tsunami in the 17th century are preserved.