Environnemental Seismology (in Moutaineous Areas)
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Environnemental Seismology (in Moutaineous Areas) Florent Gimbert IGE Grenoble
Transcript of Environnemental Seismology (in Moutaineous Areas)
Environnemental Seismology(in Moutaineous Areas)
Florent Gimbert
IGE Grenoble
Environmental seismology consists in studying the mechanical vibrations thatoriginate from or have been affected by external causes.
Larose et al., 2015
Seismic source Wave propagation
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Environmental seismology consists in studying the mechanical vibrations thatoriginate from or have been affected by external causes.
Larose et al., 2015
Seismic source Wave propagation
Complex radiation patterns
Often high frequency (>1 Hz) signals
Heterogeneous ground structure
…
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Longuet-Higgins, 1950Hardhuin and Hebers, 2013
Environmental seismology consists in studying the mechanical vibrations thatoriginate from or have been affected by external causes.
Larose et al., 2015Seismic source
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Chouet, 1986Lipovsky et al., 2013
Longuet-Higgins, 1950Hardhuin and Hebers, 2013
Environmental seismology consists in studying the mechanical vibrations thatoriginate from or have been affected by external causes.
Larose et al., 2015Seismic source
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Marc et al., 2017
Brodsky et al., 2003
Hibert et al., 2011Ekstrom and Stark., 2013
Chouet, 1986Lipovsky et al., 2013
Longuet-Higgins, 1950Hardhuin and Hebers, 2013
Environmental seismology consists in studying the mechanical vibrations thatoriginate from or have been affected by external causes.
Larose et al., 2015Seismic source
Kanamori and Given, 1982
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Marc et al., 2017
Brodsky et al., 2003
Hibert et al., 2011Ekstrom and Stark., 2013
Sergeant et al., 2016; 2019
Ekstrom et al., 2006Bartholomaus et al., 2012
Chouet, 1986Lipovsky et al., 2013
Longuet-Higgins, 1950Hardhuin and Hebers, 2013
Environmental seismology consists in studying the mechanical vibrations thatoriginate from or have been affected by external causes.
Larose et al., 2015Seismic source
Lipovsky et al., 2013
Gimbert et al., 2016Helmstetter et al., 2015
Bindschadler et al., 2003
Roesli et al., 2014
Kanamori and Given, 1982
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Marc et al., 2017
Brodsky et al., 2003
Hibert et al., 2011Ekstrom and Stark., 2013
Sergeant et al., 2016; 2019
Ekstrom et al., 2006Bartholomaus et al., 2012
Chouet, 1986Lipovsky et al., 2013
Longuet-Higgins, 1950Hardhuin and Hebers, 2013
Environmental seismology consists in studying the mechanical vibrations thatoriginate from or have been affected by external causes.
Larose et al., 2015Seismic source Burtin et al., 2008
Tsai et al., 2012Gimbert et al., 2014Cook et al., 2018
Lipovsky et al., 2013
Gimbert et al., 2016Helmstetter et al., 2015
Bindschadler et al., 2003
Roesli et al., 2014
Kanamori and Given, 1982
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Marc et al., 2017
Brodsky et al., 2003
Hibert et al., 2011Ekstrom and Stark., 2013
Sergeant et al., 2016; 2019
Ekstrom et al., 2006Bartholomaus et al., 2012
Chouet, 1986Lipovsky et al., 2013
Longuet-Higgins, 1950Hardhuin and Hebers, 2013
Environmental seismology consists in studying the mechanical vibrations thatoriginate from or have been affected by external causes.
Larose et al., 2015Seismic source Burtin et al., 2008
Tsai et al., 2012Gimbert et al., 2014Cook et al., 2018
Kean et al., 2015
Farin et al., 2019
Lipovsky et al., 2013
Gimbert et al., 2016Helmstetter et al., 2015
Bindschadler et al., 2003
Roesli et al., 2014
Kanamori and Given, 1982
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Marc et al., 2017
Brodsky et al., 2003
Hibert et al., 2011Ekstrom and Stark., 2013
Sergeant et al., 2016; 2019
Ekstrom et al., 2006Bartholomaus et al., 2012
Chouet, 1986Lipovsky et al., 2013
Longuet-Higgins, 1950Hardhuin and Hebers, 2013
Environmental seismology consists in studying the mechanical vibrations thatoriginate from or have been affected by external causes.
Larose et al., 2015Seismic source Burtin et al., 2008
Tsai et al., 2012Gimbert et al., 2014Cook et al., 2018
Kean et al., 2015
Farin et al., 2019
Tanimoto and Valovcin, 2015Gualtieri et al., 2018
Retailleau and Gualtieri, 2019
Lipovsky et al., 2013
Gimbert et al., 2016Helmstetter et al., 2015
Bindschadler et al., 2003
Roesli et al., 2014
Kanamori and Given, 1982
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Marc et al., 2017
Brodsky et al., 2003
Hibert et al., 2011Ekstrom and Stark., 2013
Sergeant et al., 2016; 2019
Ekstrom et al., 2006Bartholomaus et al., 2012
Chouet, 1986Lipovsky et al., 2013
Longuet-Higgins, 1950Hardhuin and Hebers, 2013
Environmental seismology consists in studying the mechanical vibrations thatoriginate from or have been affected by external causes.
Larose et al., 2015Seismic source Burtin et al., 2008
Tsai et al., 2012Gimbert et al., 2014Cook et al., 2018
Kean et al., 2015
Farin et al., 2019
Tanimoto and Valovcin, 2015Gualtieri et al., 2018
Retailleau and Gualtieri, 2019
Marsan et al., 2011
Marsan et al., 2019
Tsai and McNamara., 2011
Sergeant et al., 2013Lipovsky et al., 2013
Gimbert et al., 2016Helmstetter et al., 2015
Bindschadler et al., 2003
Roesli et al., 2014
Kanamori and Given, 1982
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Grob et al.., 2011
Environmental seismology consists in studying the mechanical vibrations thatoriginate from or have been affected by external causes.
Larose et al., 2015
Bottelin et al., 2013
Wave propagation
Ground damage
Mainsant et al., 2015 5
Environmental seismology consists in studying the mechanical vibrations thatoriginate from or have been affected by external causes.
Larose et al., 2015
Bottelin et al., 2013
Wave propagation
Ground damage
Mainsant et al., 2015
Ground water
Lecocq et al., 2017 5
Environmental seismology consists in studying the mechanical vibrations thatoriginate from or have been affected by external causes.
Larose et al., 2015
Bottelin et al., 2013
Wave propagation
Ground damage
Mainsant et al., 2015
Ground water
Lecocq et al., 2017
Mordret et al., 2016Zhan, 2019
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Environnemental Seismology
How are seismic observations helpfull to answer key scientificquestions in the respective fields (geomorphology, glaciology,
climate, natural hazards, etc…)?
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Environnemental Seismology
How are seismic observations helpfull to answer key scientificquestions in the respective fields (geomorphology, glaciology,
climate, natural hazards, etc…)?
1- Can we provide new understanding on unknown physical processes?
2- Can we provide deliverables/numbers?
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Environnemental Seismology
How are seismic observations helpfull to answer key scientificquestions in the respective fields (geomorphology, glaciology,
climate, natural hazards, etc…)?
1- Can we provide new understanding on unknown physical processes?
2- Can we provide deliverables/numbers?
using source analysis (Bartholomaus et al., 2015; Gimbert et al., 2016, Nanni et al., 2019; The RESOLVE project)
Subglacial hydrology
Glacier fracturing
Glaciology
River sediment transport
using source analysis (Burtin et al., 2008; Tsai et al., 2012; Gimbert et al., 2014; Bakker et al., 2019)
Geomorphology
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using source analysis (The RESOLVE Project)
1- Can we provide new understanding on unknown physical processes?The example of subglacial hydrology
Hoffman et al., 2016 Werder et al., 2013
What is the geometry (cavity structure, channel size and number) of the subglacial hydrology network?
How does the geometry evolve with changing sliding velocity?
How about water pressure?
Conceptualization Glacier scale numerical modelling
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1- Can we provide new understanding on unknown physical processes?The example of subglacial hydrology
using source analysis (Bartholomaus et al., 2015; Gimbert et al., 2016, Nanni et al., 2019; The RESOLVE project)
Bartholomaus et al., 2015
Medenhall Glacier, Alaska
Rel
ativ
e p
ress
ure
gr
adie
nt
Gimbert et al., 2016
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1- Can we provide new understanding on unknown physical processes?The example of subglacial hydrology
using source analysis (Bartholomaus et al., 2015; Gimbert et al., 2016, Nanni et al., 2019; The RESOLVE project)
Nanni et al., 20199
1- Can we provide new understanding on unknownphysical processes?
The example of subglacial hydrologyusing source analysis (Bartholomaus et al., 2015; Gimbert et al., 2016, Nanni et al., 2019; The RESOLVE project)
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1- Can we provide new understanding on unknownphysical processes?
The example of subglacial hydrology
using source analysis (Bartholomaus et al., 2015; Gimbert et al., 2016, Nanni et al., 2019; The RESOLVE project)
Nanni et al. (ongoing work)
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Subglacial channel network ?
Nanni et al. (ongoing work)
1- Can we provide new understanding on unknown physical processes?
The example of subglacial hydrology
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1- Can we provide new understanding on unknown physical processes?
The example of subglacial hydrology
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Using the phase of the signal
Nanni et al. (ongoing work)
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1- Can we provide new understanding on unknown physical processes?
The example of subglacial hydrology
Subglacial channel ?
Nanni et al. (ongoing work)
1- Can we provide new understanding on unknownphysical processes?
The example of subglacial hydrology
AMPLITUDE
PHASE
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1- Can we provide new understanding on unknown physical processes?
The example of subglacial hydrology
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1- Can we provide new understanding on unknown physical processes?
The example of subglacial hydrology
Urruty et al. (ongoing work)
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1- Can we provide new understanding on unknown physical processes?
The example of subglacial hydrology
Urruty et al. (ongoing work)
2- Can we provide deliverables/numbers?
River sediment transport
using source analysis (Burtin et al., 2008; Tsai et al., 2012; Gimbert et al., 2014; Bakker et al., subm.)
Geomorphology
GROUND
Seismic Station
Burtin et al., 2008
Seis
mic
po
wer
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2- Can we provide deliverables/numbers?
River sediment transport
using source analysis (Burtin et al., 2008; Tsai et al., 2012; Gimbert et al., 2014; Bakker et al., subm.)
Geomorphology
Tsai et al., 2012
Burtin et al., 2008
Inverted flux
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GROUND
Seismic Station
Trisuli River (Nepal)
2- Can we provide deliverables/numbers?
River sediment transport
using source analysis (Burtin et al., 2008; Tsai et al., 2012; Gimbert et al., 2014; Bakker et al., subm.)
Geomorphology
Seismic Station
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Sediment flux inversions yield reliable results(no need of calibration, just need appropriate source and wave propagation description)
Bakker et al., subm.
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Sismologie environnementale et RESIFObservations de terrain Parc instrumental
En FranceNodes (100 SISMOB)
Cet hiverGlacier d’Argentière (F. Gimbert; A. Helmstetter) et de l’Astrolabe (Terre
Adélie, PI: G. Barruol, IPGP)
- projet ANR Franco-Allemand avec l’Astrolabe comme site pilote (PI: D. Zigone, IPGS)
- projet ERC SYNERGY sur l’instrumentation/l’exploration de
l’Antarctique de l’Est (co-PI: G. Barruol, IPGP avec
glaciologues, océanographes et biologistes)
Exemples d’activités en cours et futures sur les glaciers:
A l’étranger Diffusion de données
Futur proche à lointain
