Second Circular - 産業技術総合研究所 · The 14th CCVG Workshop in Hokkaido, Japan, 2020 3...

The 14th CCVG Workshop in Hokkaido, Japan, 2020

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Second Circular

IAVCEI

Commission on the Chemistry of Volcanic Gases

14th CCVG Workshop in Hokkaido, Japan, 29 May – 5 June

Tarumae volcano

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



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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.

Registration and Abstract submission will open in November 2019, along with release of the Third

Circular to provide detailed information on costs and eventual grant options, as well as deadlines. All

information will be made 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



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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. A local researcher will be invited to give a

general presentation regarding volcanoes in Hokkaido, Japan.

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

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)


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General Information

Japan is an island country in East Asia. From

North to South, the names of the main islands are

Hokkaido, Honshu, Shikoku, and Kyushu. The

official language is Japanese and not many people

can speak English, except in urban areas or

touristic places.

Hokkaido is the northernmost and second

largest island in Japan (Fig. 1). The capital of

Hokkaido is Sapporo city. The population of

Hokkaido is more than 5 million and an area of

about 80 thousand km2. Hokkaido is known for

having the coldest climate in Japan. The

temperature in May-June varies between 10 and

25℃. In contrast to other regions in Japan,

Hokkaido is not likely to be affected by the rainy season in June-July. The climate is dryer than other parts

of Japan in general.

The common way to travel to this island is by airplane. The main airport named ‘New Chitose

Airport’ is located at Chitose, next to Sapporo city. The airport and the city center of Sapporo are connected

by train. However, a lot of cities in Hokkaido can only be accessed by roads.

There are many mountains and volcanic plateaus at the center of the island, including active

volcanoes such as Tokachi, Tarumae, Usu and Meakan. During this workshop, the field observations will

be made at Tarumae, Usu and Tokachi. On days 4 and 5, attendees will choose between Tarumae (for

plume and fumarole degassing) and/or Usu (for soil and fumarole degassing) for their measurements.

Fig. 1. Map of Japan and Hokkaido.


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Tentative CCVG itinerary for the main part of the Workshop

29/May/2020 Arrival to Hokkaido, Japan

(Please book your flight to catch a shuttle bus from the airport before 5pm)

13:00 – 17:00 Shuttle bus from New Chitose Airport to hotel every 1.5 hours 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 Talks, discussion and coffee break 12:00 – 13:00 Lunch at hotel 13:00 – 18:00 Talks, discussion and coffee break 18:00 – 20:00 Dinner at hotel and free time for bath/shower 20:00 – 22:00 Poster session

31/May/2020 Scientific meeting at Kitayuzawa, Hokkaido

07:00 – 08:00 Breakfast 08:30 – 12:00 Conference with coffee break 12:00 – 13:00 Lunch at hotel 13:00 – 18:00 Conference/meeting with coffee break 18:00 – 20:00 Dinner at hotel and free time for bath/shower 20:00 – 22:00 Poster session 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


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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 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

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 – 13:30 Lunch on your own (free-time) 13:00 – 14:00 Transport to hotel and check-in/free time 14:30 – 15:00 Transport to hot spring area (optional) 15:00 – 17:00 Water sampling at hot spring (optional) 17:00 – 17:15 Transport to hotel (optional) 19:00 – Dinner

04/Jun/2020 Field observations at Tokachi or optional tour


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[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 – Farewell party

[Optional tour group (maximum 25 people)]

06:00 – 06:30 Breakfast 06:45 – 07:00 Transfer to parking lot by bus 07:00 - 16:30 Tour around Biei prefecture with lunch (on your own) 17:30 – 17:45 Transport to hotel 19:00 – Farewell party

05/Jun/2020 Closing meeting and transfer to Airport

08:00 – 09:00 Breakfast 09:00 – 11:00 Closing meeting 11:00 - 14:00 Transport by bus to New Chitose Airport and Sapporo Station


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Field information

We will have a meeting to discuss a concrete plan to make observations on 31 May 2020 (see

Preliminary itinerary of the workshop). Every participant will get a lunch-box in the morning before

departure.

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.

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

Fig. 2. Scenery of fumaroles A and B at Tarumae volcano, Japan.


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sampling and Multi-GAS-type measurements are feasible at fumaroles (B). The walking traverse will be a

good option to measure SO2 flux, while SO2 camera measurements may not be able to be conducted because

of the location of the fumaroles.

Usu volcano

Fig. 3 Aerial photo of Usu volcano (JMA, 2018)

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


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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.

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

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


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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 sample hot spring waters around Tokachi volcano (Shirogane-onsen area)

(Fig. 5). The temperature and pH of the thermal waters are 25-50 ℃ and ∼3, respectively (Takahashi et al.,

2015). The detailed results of past surveillances can be found in Takahashi et al. (2015).

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

sou hot spring. (c) Okina hot spring.


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Sight-seeing program around Biei prefecture

For people who is not willing to hike Tokachi volcano, we prepare an optional sight-seeing tour

around Biei prefecture as a family program (Maximum 25 people). The tour will start from the foot of

Tokachi volcano and include must-see spots such as Mt. Resort Asahidake

(http://asahidake.hokkaido.jp/en/) and alike.

http://asahidake.hokkaido.jp/en/


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Optional 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 are 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

Fig. 6. Map of Japan and Asama volcano.

https://www.data.jma.go.jp/svd/vois/data/tokyo/306_Asamayama/306_So2emission.html


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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.

Karuizawa city is easy to access from Tokyo by way of a bullet train, taking about one and a half hour to

reach. It takes about 30 minutes from Karuizawa city to Asama volcano by bus.

We have one day for the observations and one free day as a backup. If bad weather precludes the

observations, a possible optional tour to Jigokudani Yaen-Koen (Snow monkey tour; http://en.jigokudani-

yaenkoen.co.jp/) can be arranged.

Please note that if number of participants is less than 10, the pre-workshop excursion will be

cancelled.


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Preliminary itinerary for the pre-workshop excursion

Minimum 10 people, maximum 25 people

26/May/2020 Arrival to Karuizawa, Japan

14:00 - 18:00 Arrive to Karuizawa Station on your own 19:00 Dinner 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 Dinner 28/May/2020 Spare day in case of bad weather following same itinerary (or free day/Snow

Monkey tour) 29/May/2020 Transfer to Hokkaido

(Please arrive to New Chitose Airport before 5 pm to catch the final shuttle bus from the airport)

08:00 – Free time and transfer to New Chitose Airport on your own

13:00 – 17:00 Shuttle bus from Airport to hotel every 1.5 hour 15:00 – Check in / Registration 19:00 Ice-Breaker


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Conference venue and accommodations

For the first five days, 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 3 days, 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

https://www.mori-soraniwa.com/en/

http://www.biei-hotelparkhills.com/english/


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Logistics and costs

Main Workshop

Registration fee for the main workshop will be around 1400 USD per person for 8 days. Students will have

discount options up to 200 USD. People who is coming from developing countries (especially from South-

East Asia) can apply for discount options up to 1000 USD with review processes.

Included:

- Fee for abstract submission

- Workshop materials

- Ice-Breaker and Farewell Party

- Transportation from the airport on arrival

- Accommodation and meals from 29 May to 5 June, 2020

- Field transportation and meals including coffee breaks and lunch-boxes

- Transportation to the airport on departure on 5 June, 2020

Not Included:

- Transportation to Japan

- Lunches on transferring days (03/June/2020 and 05/June/2020)

- Pre-workshop excursion

Scientific Meeting only

Price will be 350 USD.

Included:

- Fee for abstract submission

- Workshop materials


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- Ice-Breaker

Not Included:

- Transportation from and to the airport

- Accommodation and meals

Optional Pre-Workshop excursion in Asama volcano

Price will be 300 USD.

Tokyo has two airports: Narita and Haneda and you will choose which airport you use. The fee does not

include domestic flight from Tokyo to Hokkaido (Shin Chitose airport) because a stopover (in Tokyo) flight

ticket from your country would be cheaper than an independent domestic flight ticket from Tokyo to

Hokkaido. If the stopover ticket is not available or more expensive, please let us know and we are willing

to help and arrange you for the possible flights to book for the domestic flight. The local coordinators will

transport by train to Tokyo and use a flight from Haneda airport to Shin-Chitose airport around noon. The

train to Tokyo from Karuizawa will take up to one and a half hour. The flight from Haneda airport to Shin-

Chitose airport will take less than one and a half hour.

Included:

- Field transportation

- Accommodation from 26 May to 28 May, 2020.

Not Included:

- Transportation from and to the airports

- Domestic flight ticket from Tokyo to Hokkaido


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- Lunch and dinner


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Local organizing committee

Ryunosuke KAZAHAYA (JMA/GSJ), Hiroshi SHINOHARA (GSJ), Masaaki MORITA (GSJ), Toshiya

MORI (Univ. of Tokyo), Takeshi OHBA (Tokai Univ.)

Scientific committee

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 (GSJ), Japan

Contact: Ryunosuke KAZAHAYA ([email protected]); Toshiya MORI ([email protected]

tokyo.ac.jp)

Website:


Important dates (tentative)

November 2019 – Pre-registration / Abstract submission open

mailto:[email protected]

mailto:[email protected]



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January 2020 – Abstract submission and grant applications close

February 2020 – Grants announcement / Registration closes / Payment deadline

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”.

Second Circular - 産業技術総合研究所 · The 14th CCVG Workshop in Hokkaido, Japan, 2020 3...

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