FN Archimer Export Format
PT J
TI Tide-induced microseismicity in the Mertz glacier grounding area, East Antarctica
BT 
AF BARRUOL, Guilhem
   CORDIER, Emmanuel
   BASCOU, Jerome
   FONTAINE, Fabrice R.
   LEGRESY, Benoit
   LESCARMONTIER, Lydie
AS 1:1;2:1;3:2;4:1;5:3;6:3,4;
FF 1:;2:;3:;4:;5:;6:;
C1 Univ Paris Diderot, CNRS UMR 7154, Sorbonne Paris Cite, Lab GeoSci Reunion,Univ La Reunion,Inst Phys Glob, FR-97744 St Denis, France.
   Univ St Etienne, CNRS UMR 6524, Univ Lyon, Lab Magmas & Volcans, St Etienne, France.
   Lab Etud Geophys & Oceanog Spatiale, Toulouse, France.
   Australian Natl Univ, Res Sch Earth Sci, Acton, ACT, Australia.
C2 UNIV PARIS 07, FRANCE
   UNIV ST ETIENNE, FRANCE
   LEGOS, FRANCE
   UNIV AUSTRALIAN NATL, AUSTRALIA
IF 4.456
TC 23
UR https://archimer.ifremer.fr/doc/00244/35567/34098.pdf
LA English
DT Article
CR NIVMER 08-DDU
   VT 93 / NIVMER08
BO L'Astrolabe
   Marion Dufresne
DE ;icequakes;Mertz glacier;tide;Antarctica;cryoseismology;Adélie land
AB The deployment of a seismic network along the Adelie and George V coasts in East Antarctica during the period 2009-2012 provides the opportunity to monitor cryoseismic activity and to obtain new insights on the relationship between tidal cycles and coastal glacier dynamics. Here we focus on records from a seismometer located on a rocky outcrop in the vicinity of the grounding line of the 35 km broad Mertz glacier, a major outflow of this region. We detect numerous icequakes (50,000 events within 10 months and up to 100 events/h) and demonstrate their clear tidal modulation. We suggest that they result from ice friction and fracturing around the rocky peak and from the glacier flexure in response to the falling and rising tides at its grounding area. We propose that such icequake monitoring could be used as a climate proxy since grounding lines are subject to migrate with sea level changes.
PY 2013
PD OCT
SO Geophysical Research Letters
SN 0094-8276
PU Amer Geophysical Union
VL 40
IS 20
UT 000330514200015
BP 5412
EP 5416
DI 10.1002/2013GL057814
ID 35567
ER

EF