third circular iavcei, ccvg · rock type is andesite. tokachi volcano has two craters: 62-2 crater...

CCVG 14th Workshop Hokkaido, Japan in 2020

Third Circular

IAVCEI, CCVG

14th CCVG Field Workshop on Volcanic Gases in Japan

Workshop: Hokkaido, 29 May – 5 June, 2020

Pre-workshop excursion: Asama, 26 -29 May, 2020

(A crater at Tarumae volcano)

Registration and Abstract submission deadline: 15 February, 2020 https://staff.aist.go.jp/aki.morita/gasworkshop14.html


Invitation On behalf of Commission on the Chemistry of Volcanic Gases (CCVG) of the International Association of Volcanology and Chemistry of the Earth’s Interior (IAVCEI), we are delighted to invite the international geochemical community working on volcanic gases to participate in the 14th CCVG Workshop in Hokkaido, Japan, from 29 May to 5 June 2020.

Main aims of the workshop are to share and discuss recent developments in observation techniques, results and interpretations of volcanic gas studies. The core activities of the workshop will be composition and flux measurements using direct sampling and remote sensing techniques in active vents, plume, and soil emissions. The workshop will include two days of scientific presentations and discussions followed by three days of field observations. Measurements will be carried out at Usu, Tarumae and Tokachi volcanoes. Pre-workshop observations, mainly devoted to plume measurements using remote sensing techniques, will be offered as an option and will take place at Asama volcano in Central Japan from 26 to 29 May 2020. The excursion includes one day of field work at the volcano and one spare day in case of bad weather conditions. All information are available through the website:

https://staff.aist.go.jp/aki.morita/gasworkshop14.html.

Scientific Program

We hope the conference will be a perfect opportunity to represent a wide range of scientific activities around the study of volcanic gases. As a guide, we aim to organize the presentations around the following topics: (1) geochemistry of magmatic gases, (2) innovations and recent advances in observational techniques and methods, (3) atmospheric chemistry of volcanic plumes, and (4) interpretation and modeling of volcanic processes based on geochemical and complementary datasets. We will set both oral and poster sessions and allocate time for active and fruitful discussions. General introduction of volcanoes in Hokkaido will be given by local researchers.

Field activities

1. Direct sampling of volcanic gases at active vents (Tarumae, Usu and Tokachi) 2. In-situ composition measurements at active vents using Multi-GAS or similar systems (Tarumae, Usu and Tokachi) 3. Plume measurements using remote sensing techniques (Tarumae and Tokachi; and Asama as a pre-excursion) 4. Measurements of diffuse soil degassing with a special focus on CO2 (Usu)


General Information

The workshop will be held in Hokkaido (Fig. 1); with fieldwork at Usu, Tarumae and Tokachi volcanoes. Two days scientific meeting will be held at Kitayuzawa, close to Usu volcano. The capital of Hokkaido is Sapporo city. The temperature in May-June varies between 10 and 25℃ in cities but can be cold on mountains. We will start from Sapporo (New Chitose) airport on 29 May, 2020 and end at the airport on 5 June. The airport and the city center of Sapporo are connected by train in 40 min. Two days pre-workshop excursion is planned for remote-sensing volcanic plume of Asama volcano. We will start on 26 June from Karuizawa station, which locates about 1 hour by train from Tokyo and end at Tokyo in the evening of 28 June. Schedule 29/May/2020 Arrival to Sapporo (New-Chitose) airport, Japan 13:00 – 17:00 Shuttle buses from Airport to hotel (1 hour trip)

(Please plan to arrive at the airport by 16:00 to catch the last shuttle bus on 17:00) 15:00 – Check in / Registration 19:00 Ice-Breaker 30/May/2020 Scientific meeting at Kitayuzawa, Hokkaido 07:00 – 08:00 Breakfast 08:30 – 12:00 Opening, oral session and coffee break 12:00 – 13:00 Lunch at hotel 13:00 – 17:30 Oral session and coffee break 17:30 – 19:00 Poster session 19:00 – Dinner at hotel and free time 31/May/2020 Scientific meeting at Kitayuzawa, Hokkaido 07:00 – 08:00 Breakfast

Fig. 1. Map of Japan and Hokkaido.


08:30 – 12:00 Oral session and coffee break 12:00 – 13:00 Lunch at hotel 13:00 – 17:30 Oral session and coffee break 17:30 – 19:00 Planning Fieldwork 19:00 – Dinner at hotel and free time 01/Jun/2020 Field observations at Tarumae or Usu [Tarumae group] 07:00 – 07:30 Breakfast 07:45 – 08:45 Transport to the field by bus 09:00 - 11:00 Hiking to fumarole fields 11:00 – 15:30 Measurements at fields 15:30 – 17:30 Return to parking lot 18:00 – 19:00 Transport to hotel 19:00 - Dinner [Usu group] 07:00 – 07:30 Breakfast 08:00 – 08:30 Transport to ropeway station by bus 09:00 - 09:15 Transport to summit area by ropeway 09:30 – 17:30 Measurements at fields 17:30 – 17:45 Transport to parking lot by ropeway 18:00 – 18:30 Transport to hotel 19:00 – Dinner 02/Jun/2020 Field observations at Usu 07:00 – 07:30 Breakfast 08:00 – 08:30 Transport to ropeway station by bus 09:00 - 09:15 Transport to summit area by ropeway 09:30 – 17:30 Measurements at fields 17:30 – 17:45 Transport to parking lot by ropeway 18:00 – 18:30 Transport to hotel 19:00 – Dinner 03/Jun/2020 Transfer to Shirogane-onsen, Hokkaido 07:00 – 07:30 Breakfast 08:00 – 12:00 Transfer to Shirogane-onsen area by bus 12:00 – 13:00 Lunch on your own 13:00 – 14:00 Transport to hotel and check-in/free time 14:30 – 17:00 Water sampling at hot spring (optional) 19:00 – Dinner


04/Jun/2020 Field observations at Tokachi or optional tour [Field group] 06:00 – 06:30 Breakfast 06:45 – 07:00 Transfer to parking lot by bus 07:00 - 10:00 Hiking to summit 10:00 – 14:00 Measurements at fields 14:00 – 17:00 Return to parking lot 17:30 – 17:45 Transport to hotel 19:00 – 21:00 Farewell party [Bus tour group]: 07:00 – 08:00 Breakfast 08:30 – 16:00 Tour around Biei prefecture with lunch (on your own) 19:00 – 21:00 Farewell party 05/Jun/2020 Closing meeting and transfer to Airport 08:00 – 09:00 Breakfast 09:00 – 11:00 Closing meeting 11:30 – 12:30 Lunch 13:00 – 16:00 Transport by bus to Sapporo (New-Chitose) airport Field information Tarumae volcano Tarumae volcano is an andesitic volcano located at southern-west parts of Hokkaido, belonging to the Shikotsu-Toya national park (Fig. 1). The altitude is 1041 m a.s.l. This volcano has a lava dome and two active fumaroles (named A and B) around the dome (Fig. 2). Last eruptions were phreatic ones in 1978, 1979, and 1981. It will take less than two hours by feet to reach the fumaroles from a parking lot located at an altitude of 660 m a.s.l.

The fumaroles (A) emit high temperature (500-600℃) gases. They are easy to reach and feasible for direct gas sampling and Multi-GAS-type measurements. The SO2 flux from the fumaroles (A) is estimated to be 2-5 tons/day, suited for measurements by walking traverse or SO2 camera methods.

Fumarole A Fumarole B

Fig. 2. Fumaroles A and B at Tarumae volcano, Japan.


The fumaroles (B) are located at the opposite side of the dome respect to fumaroles (A). The temperature of fumaroles (B) is 300-400℃; the SO2 flux from fumaroles (B) is estimated to be less than 0.1 tons/day. Because of the slope, these fumaroles are relatively tough to reach although direct gas sampling and Multi-GAS-type measurements are feasible at fumaroles (B). The walking traverse to measure SO2 flux is possible but tough, while SO2 camera measurements may not be able to be conducted because of the location of the fumaroles.

Usu volcano Usu is a dacitic volcano formed at the rim of Toya caldera in western Hokkaido (Fig. 1). The altitude is 737 m a.s.l. Usu volcano has erupted frequently with intervals of 20-30 years and recent eruptions occurred in 1978 and 2000. We plan to make fumarolic gas sampling at the I-crater fumarolic area and soil CO2 flux surveys at the surrounding area (Fig. 3). The I-fumarolic area is located at the foot of the dome formed by the 1978 eruption and was the location of the 2nd CCVG gas workshop in 1985 (Giggenbach and Matsuo, 1991). The highest outlet temperature of the fumarole is still about 400℃ (>99.5% H2O with very low CO2, SO2 and H2S). SO2 flux measurements will be very difficult because of the low SO2 content. At this location, Hernández et al. (2001) observed a precursory soil CO2 flux increase prior to the eruption in 2000. We will walk about 30 min from a summit stop of the ropeway to the fumarolic field.

Fig. 3 Aerial view of Usu volcano (left) and I-crater (right: JMA, 2013)

Tokachi volcano Tokachi volcano is located at the center of Hokkaido. The altitude of this volcano is 2077 m a.s.l. The main rock type is andesite. Tokachi volcano has two craters: 62-2 crater and Taisho crater. The latest eruption occurred at 62-2 crater in 1989. It will take 2-3 hours by feet to reach Taisho crater from a parking lot. Around Taisho crater, the fumaroles are located on a steep slope but are accessible. The temperature of the fumaroles is about 300℃ and both direct gas sampling and Multi-GAS measurements are feasible. The SO2 flux from the fumaroles around Taisho crater is estimated to be several tens tons/day. The plume is often grounded but can be measured either by walking traverse or SO2 camera. 62-2 crater is located next to Taisho crater. The fumarolic areas reside in 62-2 crater but they are often difficult to reach. Multi-GAS would be the option to measure the gas composition. The plume is S-rich with a SO2 flux from this crater estimated to be about a few hundred ton/day. Walking traverses or SO2 camera measurements could be


conducted to measure the SO2 flux. The parking lot and car roads are often windward side from the craters; however, there are a few chances to measure the SO2 flux by car traverses if the wind direction is favorable.

Hot springs at Shirogane-onsen area On 3 June 2020, we will visit three hot springs around Tokachi volcano (Shirogane-onsen area) for water sampling (Fig. 5). The temperature and pH of the thermal waters are 25-50 ℃ and ~3, respectively (Takahashi et al., 2015). The visit is optional with request at the registration site.

Bus tour around Biei prefecture on 4 June The hike up to the crater of Tokachi volcano is strenuous taking 3 hours. For people who is not willing climb up to the crater area, we will offer an optional sight-seeing tour around Biei prefecture for frees. Lunch is on you own. Accompanying person can join the tour without extra charge.

Taisho crater

62-2 crater

Fig. 4. Tokachi volcano from the foot of the volcano (left). Taisho crater and 62-2 crater (right).

Fig. 5. Hot springs around Tokachi volcano (Shirogane-onsen area) (a) Bengara hot spring. (b) Hakugin-sou hot spring. (c) Okina hot spring.


Conference venue and accommodations For the first five nights, we will stay at Mori no Soraniwa hotel located at Kitayuzawa, Hokkaido. The scientific meeting is held inside of the hotel. For more information, please check the following link (https://www.mori-soraniwa.com/en/).

For last 2 nights, we stay at Hotel Shirogane Park Hills located at Shirogane onsen, Hokkaido, Japan. The closing meeting is held at the hotel. For more information, please check a following link (http://www.biei-hotelparkhills.com/english/).

Fig. 7. Photos from Mori no Soraniwa Hotel

Fig. 8. Photos from Hotel Shirogane Park Hills


Pre-workshop excursion at Asama volcano

As mentioned above, at Tokachi and Tarumae volcanoes, plume measurements (e.g., SO2 flux) usually can be made by walking traverse or scanning or imaging methods but not by a car traverse because of limitation of car roads around these volcanoes. Because there is no good options for a car traverse in the main part of the workshop, we offer the possibility to make an excursion for plume measurements using UV remote sensing techniques such as DOAS and SO2 camera at Asama volcano in the days previous to the main workshop. Asama volcano is an andesitic volcano located in Central Japan (Fig. 6). The volcano has an active summit crater with a diameter of 450 m and a depth of 250 m. Volcanic gases have discharged from the crater continuously at least since 1975 (Mori et al., 2013). Recent eruptions occurred in 2004, 2008, 2009, 2015 and 2019. Volcanism of this volcano is characterized by multiple cycles of intensive volcanic gas discharge showing a good correlation with inflation of the volcanic edifice (Kazahaya et al, 2015). During active periods, the SO2 flux was as high as several thousand tons/day. During inactive periods, the SO2 flux dropped to ca. 100 tons/day or less. Currently, small eruptions occurred in August 2019 and the SO2 flux has been less than several hundred tons/day (https://www.data.jma.go.jp/svd/vois/data/tokyo/306_Asamayama/306_So2emission.htm). There have been no scanning networks to monitor SO2 flux but car traverse measurements have been conducted regularly mainly by the Japan Meteorological Agency. Under west wind conditions, car traverse measurements can be made at about 4 km away from the crater. In contrast to SO2, BrO has not been quantified from the volcanic plume of Asama volcano. Car traverse, scanning measurements, and SO2 camera measurements of the volcanic plume are the main objectives of this pre-workshop excursion. During the excursion, we will stay at Karuizawa city that is well known as a resort spot for Japanese people. If the number of participants is less than 10, the pre-workshop excursion will be cancelled.

Summit crater

Observatory

Fig. 6. Map of Japan and Asama volcano.


Schedule the pre-workshop excursion Minimum 10 people, maximum 20 people 26/May/2020 Arrival to Karuizawa, Japan 14:00 – 18:00 Arrive to Karuizawa station on your own 18:00 – Free 27/May/2020 Measurements 07:00 – 07:30 Breakfast 08:00 – 09:00 Transport to Asama volcano (get lunch box on the way) 09:30 – 15:30 Measurements 16:00 – 17:00 Transport to Hotel 18:00 – Free 28/May/2020 Measurements 07:00 – 07:30 Breakfast 08:00 – 09:00 Transport to Asama volcano (get lunch box on the way) 09:30 – 15:30 Measurements 16:00 – 19:00 Transport to Tokyo by Shinkansen 19:00 – Free

https://www.apahotel.com/en/hotel/shutoken/asakusa-kuramae/ 29/May/2020 Travel to Hokkaido Travel to Sapporo (New-Chitose) airport on your own 13:00 – 17:00 Shuttle buses from Airport to hotel (1 hour trip)

(Please plan to arrive at the airport by 16:00 to catch the last shuttle bus on 17:00)


Registration Fee

Main Workshop Full registration: 140,000 Yen (Double Room) Single room option: 175,000 Yen Accompanying person; 130,000 Yen (Not including *) Conference only: 15,000 Yen (Including only $)

Including: - Fee for abstract submission *$ - Entrance to the conference and coffee breaks *$ - Ice-Breaker and Farewell Party - Transportation from the Sapporo (New Chitose) airport on arrival - Transportation during the workshop - Accommodation, breakfast and dinner from 29 May to 5 June, 2020 (7 nights) - 3 lunch-boxes of the fieldwork days* - Transportation to the airport on departure on 5 June, 2020

Not Including: - Lunch on 3 June, 2020 - Lunch on 4 June, 2020 for people going to the bus tour (not going to the fieldwork)

Important note: Accompanying persons will not be allowed to enter the off-limit areas where the fieldwork will be conducted. They need to arrange their schedule during the fieldwork by themselves with their own cost. We can arrange room sharing by a family and can help arrangement of your stay and activity. Please contact Hiroshi SHINOHARA ([email protected]). Pre-Workshop excursion in Asama volcano

Single room: 36,000 Yen Including:

- Field transportation - Accommodation from 26 May to 28 May, 2020. - Transportation from Karuizawa to Tokyo

Not Including: - Transportation to Karuizawa station. - Transportation in Tokyo - Flight from Haneda or Narita airport to Sapporo (New Chitose) airport - Lunch and dinner


Financial support

Financial support is available for several students (up to 50,000 yen) and a few participants from developing countries (up to 100,000 yen). The support application should be made on the registration site together with abstract submission by 15 February, 2020. Please explain the amount and reason of your requirement of the financial support. The results will be announced by 6 March with information about the payment method.

Registration and payment

Deadline, 15 February, 2020

Please visit the registration site for registration and the payment. The fee should be paid in Japanese yen via a major credit card at the registration site.

https://staff.aist.go.jp/aki.morita/gasworkshop14.html Number of participants is limited to maximum 80 because of the hotel and bus capacity. The registration is first-come basis. We need the following information before your travel to Japan. Please fill the registration form as far as you can. If your travel is not yet fixed at the time of registration, please send the information by e-mail later to: Karori SEKI ([email protected]) and Hiroshi SHINOHARA ([email protected]) - Mobile phone No., e-mail address which we can reach you during the workshop in Japan, in case of

emergency (such as lost in the mountain). - Special food requirement. Please describe in detail. - Arrival Time (Flight No.), at Sapporo (New Chitose) airport on 29 May, 2020. - Departure Time (Flight No.) from Sapporo (New Chitose) airport on 4 June, 2020. Payments at the hotels You may need to pay for extra drinks (alcohol drinks are not included except during Ice Breaker and Farewell party) and some others. The conference hotels accept major credit cards. If you need cash, please draw them before going to the conference hotel, such as at the airport, as there is no bank nor cash dispenser near the hotels.


Planning your travel

Main workshop Arrival to Sapporo (New-Chitose) airport on 29 May, 2020

Shuttle buses from the airport to the venue will be scheduled almost every hour between 13:00-17:00. The hotel locates at about one-hour drive from the airport. Please plan to arrive at the airport by 16:00 to catch the last bus leaving 17:00. Departure from Sapporo (New-Chitose) airport on 5 June, 2020 We plan to arrive the New-Chitose airport by 16:00 on 5 June. If you plan to visit Sapporo city, it will take 40 min by train scheduled every 15-20 min. If you need to catch an earlier flight on 5 June, there is a public transport by bus and trains scheduled to leave about 7:30 and arrive by 12:30 at the New Chitose airport. We can provide you details of this travel with request. Pre-workshop excursion Arrival to Karuizawa station on 26 May, 2020

Please plan your arrival by 18:00 on 26 May. The hotel (Apa hotel karuizawa-ekimae) locates at a few minutes on foot from the station: https://www.apahotel.com/en/hotel/kousinetsu/karuizawa-ekimae/

It will take about one hour from Tokyo station to Karuizawa station by Shinkansen (super-express train), with 1-2 trips every hour. Tokyo station locates about 30 min by train from Haneda international airport and 75 min by bus from Narita International airport. From Tokyo to Sapporo on 29 May, 2020 Please arrange your flight from Tokyo to Sapporo by yourself with your own cost. On 28 June, you will stay Apa hotel Asakusa-kuramae, in Tokyo.

It will take about 50 min from the hotel to the Handea airport and 8, min to the Narita airport. https://www.apahotel.com/en/hotel/shutoken/asakusa-kuramae

VISA Please check the following site for the Visa information: https://www.mofa.go.jp/j_info/visit/visa/short/novisa.html If you need an invitation letter, please send the request by e-mail to: Karori SEKI ([email protected]) and Hiroshi SHINOHARA ([email protected] Import equipment We recommend to use ATA carnet for temporal import of your equipment; https://iccwbo.org/resources-for-business/ata-carnet/ If you cannot apply for the ATA carnet, you may import your equipment as passenger custom clearance of professional equipment. If you need an invitation letter, please send the request by e-mail to: Karori SEKI ([email protected]) and Hiroshi SHINOHARA ([email protected])


Abstract submission

Deadline, 15 February, 2020

Please submit your abstract in MS word format at the Abstract submission site: https://staff.aist.go.jp/aki.morita/gasworkshop14.html

Abstract format is as follows: -------------------------

ABSTRACT TITLE (Centered, in capital letters, Bold, 12 pt font, Times New Roman)

First name Last name, Affiliation, Country

(Centered, 12 pt font, Times New Roman, Presentingauthor in bold) First name Last name, Affiliation, Country (Centered, 12 pt font, Times New Roman) First name Last name, Affiliation, Country (Centered, 12 pt font, Times New Roman)

Abstract text (12 pt font, justified, Times New Roman, 250 Word Limit) ------------------------- Local organizing committee Ryunosuke Kazahaya (JMA/GSJ), Toshiya Mori (Univ. of Tokyo), Takeshi Ohba (Tokai Univ.), Hiroshi Shinohara (GSJ), Masaaki Morita (GSJ), Karori Seki (GSJ) Scientific committee Ryunosuke Kazahaya (Japan), Mariano Agusto (Argentina), Mike Burton (UK), Tobias Fischer (USA), Andrea Luca Rizzo (Italy), Tjarda Roberts (France), Fatima Viveiros (Portugal), Muga Yaguchi (Japan)

CCVG steering committee 2017-2020

Co-Leader: Franco Tassi – University of Florence, Italy Co-Leader: Santiago Arellano – Chalmers University of Technology, Sweden Secretary: Silvana Hidalgo – Instituto Geofisico-Escuela Politécnica Nacional, Ecuador Editor/Webmaster: Artur Ionescu – Babes-Bolyai University, Romania Facebook editor: Maria Clara Lamberti – University of Buenos Aires, Argentina, Lizzette Rodriguez – University of Puerto Rico, Puerto Rico Local Workshop Organizer: Ryunosuke Kazahaya

– Japan Meteorological Agency/Geological Surve of Japan, Japan Contact: Hiroshi SHINOHARA ([email protected]); Toshiya MORI ([email protected]) Website: https://staff.aist.go.jp/aki.morita/gasworkshop14.html


Important dates 15 February, 2020

Registration, payment, abstract submission and grant application deadline 6 March, 2020 Grants results announcement 26-29 May, 2020

Pre-workshop excursion at Asama volcano 29 May – 5 June, 2020 14 the CCVG field workshop ------------------------------ References: Giggenbach W. F. and Matsuo S. (1991) Evaluation of results from Second and Third IAVCEI Field

Workshops on Volcanic Gases, Mt Usu, Japan, and White Island, New Zealand, App. Geochem., 6, 125-141.

Hernández, P. A., K. Notsu, J. M. Salazar, T. Mori, G. Natale, H. Okada, G. Virgili, Y. Shimoike, M. Sato, and N. M. Pérez (2001) Carbon dioxide degassing by advective flow from Usu volcano, Japan. Science, 292, 83–86.

Kazahaya, R., Aoki, Y., and Shinohara, H. (2015) Budget of shallow magma plumbing system at Asama Volcano, Japan, revealed by ground deformation and volcanic gas studies. J. Geophys. Res., 120, doi:10.1002/2014JB011715.

Mori, T., Shinohara, H., Kazahaya, K., Hirabayashi, J., Matsushima, T., Mori, T., Ohwada, M., Odai, M., Iino, H. and Miyashita, M. (2013) Time-averaged SO2 fluxes of subduction-zone volcanoes: Example of a 32-year exhaustive survey for Japanese volcanoes. J. Geophys. Res., 118, 8662-8674.

Takahashi, R., Shibata, T., Murayama, Y., Ogino, T., and Okazaki, N. (2015) Temporal changes in thermal waters related to volcanic activity of Tokachidake Volcano, japan: implications for forecasting future eruptions. Bull. Volcanol., 77:2.

Japan Meteorological Agency (2018) Major eruptive activities in Japan in 2018, in “annually report on earthquakes and volcanoes in Japan, December 2018”.

third circular iavcei, ccvg · rock type is andesite. tokachi volcano has two craters: 62-2 crater...

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