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2018 Fiscal Year Research-status Report

Seismic noise as a proxy for glacier dynamics

Research Project

Project/Area Number 18K18175
Research InstitutionHokkaido University

Principal Investigator

Podolskiy Evgeny  北海道大学, 北極域研究センター, 助教 (80775536)

Project Period (FY) 2018-04-01 – 2021-03-31
Keywordsglacier / seismic noise / debris mantle / climate change / Himalaya / Greenland
Outline of Annual Research Achievements

Between April 2018 and March 2019, as a first step for developing analysis methods of the proposal, I worked on seismic-noise algorithms, which were tested on my previous geophysical experiment in the Himalayas. The key research outcome of the 1st FY was a publication (Podolskiy et al., Geophys. Res. Lett., 2018). Moreover, this work was highlighted by international media (Scientific American and AGU), and presented at 5 international and national meetings, specifically: (a1). JpGU Meeting 2018, Makuhari-Tokyo (May 20-24, 2018) [oral], (a2). AGU 2018, Washington D.C. (Dec 10, 2018) [oral], (a3). VAW/ETH-Zurich Seminar, Switzerland (Oct 3, 2018) [oral], (a4). 北海道大学低温科学研究所共同利用研究集会 「気候変化に伴う質量収支と氷河変動に関する研究」2019年1月7日 [oral], (a5). 地震火山研究観測センター, 2018年度 第2 回談話会 2018年7月30日 [oral].

Furthermore, the developed methods were also applied to geophysical data I previously collected in Greenland, and they were presented as 3 talks in the following meetings: (b1). European Seismological Commission General Assembly 2018, Valetta, Malta (Sep 2-7, 2018) [oral], (b2). AGU 2018, Washington D.C. (Dec 13, 2018) [oral], (b3). VAW/ETH-Zurich Seminar, Switzerland (Sep 20, 2018) [oral].

Finally, I spent 2 month-long research stays with my collaborators in Europe's leading research institutes (April-May 2018 @ IPGP, France; Sep-Oct @ ETH-Zurich, Switzerland).

Current Status of Research Progress
Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

Considering the following outcomes:
i) the first year has already yielded 1 peer-reviewed publication (Podolskiy et al., 2018),
ii) this publication was highlighted by the world's leading magazine on popular science (i.e., Scientific American) as well as other media,
iii) the research progress was presented in 7 oral presentations (3 were international)
iv) I spent 2 month-long research stays with my collaborators in Europe's leading institutes (IPGP, France; ETH-Zurich, Switzerland),
I believe the last FY was very successful.

Strategy for Future Research Activity

Following earlier results, which were partly presented in FY2018 at several national and international meetings, I am going to work on my manuscripts focused on numerical modeling and analysis of cryo-seismic noise. This year I also plan to participate in a major international field campaign to remote areas of Greenland in June - August 2019. In collaboration with my colleagues from Hokkaido University and abroad (e.g., ETH-Zurich), we expect a significant amount of new observational data for processing, analysis, and publications. Hopefully, such results will be of major importance for my progress. In April 2019, I am going to attend European Geoscience Union 2019 meeting in Vienna for presenting my work and giving an invited talk. Indeed, I also think to participate in several other major conferences (e.g., I am invited to give a solicited talk at the 11th International Statistical Seismology, and plan to join American Geophysical Union 2019 meeting).

  • Research Products

    (15 results)

All 2019 2018 Other

All Int'l Joint Research (6 results) Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (8 results) (of which Int'l Joint Research: 4 results)

  • [Int'l Joint Research] Kathmandu University(ネパール)

    • Country Name
      NEPAL
    • Counterpart Institution
      Kathmandu University
  • [Int'l Joint Research] VAW, ETH-Zurich(スイス)

    • Country Name
      SWITZERLAND
    • Counterpart Institution
      VAW, ETH-Zurich
  • [Int'l Joint Research] Institut de Physique du Globe de Paris(フランス)

    • Country Name
      FRANCE
    • Counterpart Institution
      Institut de Physique du Globe de Paris
  • [Int'l Joint Research] Universidad Austral de Chile(チリ)

    • Country Name
      CHILE
    • Counterpart Institution
      Universidad Austral de Chile
  • [Int'l Joint Research] GFZ German Res. Centre for Geosciences(ドイツ)

    • Country Name
      GERMANY
    • Counterpart Institution
      GFZ German Res. Centre for Geosciences
  • [Int'l Joint Research]

    • # of Other Countries
      2
  • [Journal Article] Nocturnal thermal fracturing of a Himalayan debris‐covered glacier revealed by ambient seismic noise2018

    • Author(s)
      Podolskiy, E. A., K. Fujita, S. Sunako, A. Tsushima, and R.B. Kayastha
    • Journal Title

      Geophysical Research Letters

      Volume: 45 Pages: 9699-9709

    • DOI

      10.1029/2018GL079653

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Ambient seismic noise に記録されたネパールヒマラヤのデブリ氷河における夜間の熱的破砕現象2019

    • Author(s)
      Podolskiy E.
    • Organizer
      北海道大学低温科学研究所共同利用研究集会 「気候変化に伴う質量収支と氷河変動に関する研究」
  • [Presentation] Ambient seismic noise at a Himalayan debris-covered glacier2018

    • Author(s)
      Podolskiy E.
    • Organizer
      JpGU Meeting 2018, Tokyo
    • Int'l Joint Research
  • [Presentation] Nocturnal Thermal Fracturing of a Himalayan Debris-covered Glacier: Evidence from Ambient Seismic Noise and Numerical Modeling2018

    • Author(s)
      Podolskiy E.
    • Organizer
      AGU Fall Meeting 2018, Washington D.C.
    • Int'l Joint Research
  • [Presentation] Nocturnal thermal fracturing of a Himalayan debris-covered glacier: Evidence from ambient seismic noise and numerical modelling2018

    • Author(s)
      Podolskiy E.
    • Organizer
      VAW/ETH-Zurich Seminar, Switzerland
  • [Presentation] Long-period seismic events and tremor at a tidewater glacier in Greenland2018

    • Author(s)
      Podolskiy E.
    • Organizer
      European Seismological Commission General Assembly 2018, Valetta
    • Int'l Joint Research
  • [Presentation] Ambient seismic noise に記録されたネパールヒマラヤのデブリ氷河における夜間の熱的破砕現象2018

    • Author(s)
      Podolskiy E.
    • Organizer
      地震火山研究観測センター, 2018年度 第2 回談話会
  • [Presentation] Hydraulic Link between Glacier-dammed Lake and Meltwater Plume Revealed by Seismic Tremor, Time-lapse Imagery, Radar and Mooring2018

    • Author(s)
      Podolskiy E.
    • Organizer
      AGU Fall Meeting 2018, Washington D.C.
    • Int'l Joint Research
  • [Presentation] Seismic symphony of a tidewater glacier: tide-modulated cracks, subglacial GLOFs, calving and sliding tremors2018

    • Author(s)
      Podolskiy E.
    • Organizer
      VAW/ETH-Zurich Seminar, Switzerland

URL: 

Published: 2019-12-27  

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