Nucleation and seismic tremor associated with the glacial earthquakes of Whillans Ice Stream, Antarctica
The ability to monitor transient motion along faults is critical to improving our ability to understand many natural phenomena such as landslides and earthquakes. Here, we usedata from a GPS and seismometer network that were deployed to monitor the regularly repeating glacial earthquakes of Whillans...
Main Authors: | , , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
ScholarWorks@CWU
2013
|
Subjects: | |
Online Access: | https://digitalcommons.cwu.edu/cotsfac/276 https://digitalcommons.cwu.edu/cgi/viewcontent.cgi?article=1276&context=cotsfac |
id |
ftcwashingtonuni:oai:digitalcommons.cwu.edu:cotsfac-1276 |
---|---|
record_format |
openpolar |
spelling |
ftcwashingtonuni:oai:digitalcommons.cwu.edu:cotsfac-1276 2023-05-15T13:47:32+02:00 Nucleation and seismic tremor associated with the glacial earthquakes of Whillans Ice Stream, Antarctica Winberry, J. Paul Anandakrishnan, Sridhar Wiens, Douglas A. Alley, Richard B. 2013-01-30T08:00:00Z application/pdf https://digitalcommons.cwu.edu/cotsfac/276 https://digitalcommons.cwu.edu/cgi/viewcontent.cgi?article=1276&context=cotsfac unknown ScholarWorks@CWU https://digitalcommons.cwu.edu/cotsfac/276 https://digitalcommons.cwu.edu/cgi/viewcontent.cgi?article=1276&context=cotsfac © 2013. American Geophysical Union. All Rights Reserved. All Faculty Scholarship for the College of the Sciences harmonic tremor glacial earthquakes ice stream stick‐slip nucleation Earth Sciences Geomorphology Geophysics and Seismology Glaciology Tectonics and Structure text 2013 ftcwashingtonuni 2022-10-20T20:29:10Z The ability to monitor transient motion along faults is critical to improving our ability to understand many natural phenomena such as landslides and earthquakes. Here, we usedata from a GPS and seismometer network that were deployed to monitor the regularly repeating glacial earthquakes of Whillans Ice Stream, West Antarctica to show that a unique pattern of precursory slip precedes complete rupture along the bed of the ice stream. Additionally, we show that rupture can be independently tracked by increased levels of microseismic activity, including harmonic tremor, that are coincident with the onset of slip at any location, thus providing a remote means of monitoring stress and rupture propagation during the glacial earthquakes. Text Antarc* Antarctica West Antarctica Whillans Ice Stream Central Washington University: ScholarWorks West Antarctica Whillans ENVELOPE(-64.250,-64.250,-84.450,-84.450) Whillans Ice Stream ENVELOPE(-145.000,-145.000,-83.667,-83.667) |
institution |
Open Polar |
collection |
Central Washington University: ScholarWorks |
op_collection_id |
ftcwashingtonuni |
language |
unknown |
topic |
harmonic tremor glacial earthquakes ice stream stick‐slip nucleation Earth Sciences Geomorphology Geophysics and Seismology Glaciology Tectonics and Structure |
spellingShingle |
harmonic tremor glacial earthquakes ice stream stick‐slip nucleation Earth Sciences Geomorphology Geophysics and Seismology Glaciology Tectonics and Structure Winberry, J. Paul Anandakrishnan, Sridhar Wiens, Douglas A. Alley, Richard B. Nucleation and seismic tremor associated with the glacial earthquakes of Whillans Ice Stream, Antarctica |
topic_facet |
harmonic tremor glacial earthquakes ice stream stick‐slip nucleation Earth Sciences Geomorphology Geophysics and Seismology Glaciology Tectonics and Structure |
description |
The ability to monitor transient motion along faults is critical to improving our ability to understand many natural phenomena such as landslides and earthquakes. Here, we usedata from a GPS and seismometer network that were deployed to monitor the regularly repeating glacial earthquakes of Whillans Ice Stream, West Antarctica to show that a unique pattern of precursory slip precedes complete rupture along the bed of the ice stream. Additionally, we show that rupture can be independently tracked by increased levels of microseismic activity, including harmonic tremor, that are coincident with the onset of slip at any location, thus providing a remote means of monitoring stress and rupture propagation during the glacial earthquakes. |
format |
Text |
author |
Winberry, J. Paul Anandakrishnan, Sridhar Wiens, Douglas A. Alley, Richard B. |
author_facet |
Winberry, J. Paul Anandakrishnan, Sridhar Wiens, Douglas A. Alley, Richard B. |
author_sort |
Winberry, J. Paul |
title |
Nucleation and seismic tremor associated with the glacial earthquakes of Whillans Ice Stream, Antarctica |
title_short |
Nucleation and seismic tremor associated with the glacial earthquakes of Whillans Ice Stream, Antarctica |
title_full |
Nucleation and seismic tremor associated with the glacial earthquakes of Whillans Ice Stream, Antarctica |
title_fullStr |
Nucleation and seismic tremor associated with the glacial earthquakes of Whillans Ice Stream, Antarctica |
title_full_unstemmed |
Nucleation and seismic tremor associated with the glacial earthquakes of Whillans Ice Stream, Antarctica |
title_sort |
nucleation and seismic tremor associated with the glacial earthquakes of whillans ice stream, antarctica |
publisher |
ScholarWorks@CWU |
publishDate |
2013 |
url |
https://digitalcommons.cwu.edu/cotsfac/276 https://digitalcommons.cwu.edu/cgi/viewcontent.cgi?article=1276&context=cotsfac |
long_lat |
ENVELOPE(-64.250,-64.250,-84.450,-84.450) ENVELOPE(-145.000,-145.000,-83.667,-83.667) |
geographic |
West Antarctica Whillans Whillans Ice Stream |
geographic_facet |
West Antarctica Whillans Whillans Ice Stream |
genre |
Antarc* Antarctica West Antarctica Whillans Ice Stream |
genre_facet |
Antarc* Antarctica West Antarctica Whillans Ice Stream |
op_source |
All Faculty Scholarship for the College of the Sciences |
op_relation |
https://digitalcommons.cwu.edu/cotsfac/276 https://digitalcommons.cwu.edu/cgi/viewcontent.cgi?article=1276&context=cotsfac |
op_rights |
© 2013. American Geophysical Union. All Rights Reserved. |
_version_ |
1766247272536866816 |