Monitoring rapid temporal changes in a volcano with coda wave interferometry, Geophys
[1] Multiply–scattered waves typically dominate the late part of the seismic coda in local earthquake seismograms. Small medium changes that have no detectable influence on the first arrivals are amplified by multiple scattering and may thus be readily observed in the coda. We exploit this idea usin...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.70.4321 2023-05-15T13:57:37+02:00 Monitoring rapid temporal changes in a volcano with coda wave interferometry, Geophys Er Grêt Roel Snieder Richard C. Aster Philip R. Kyle The Pennsylvania State University CiteSeerX Archives 2005 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.70.4321 http://www.mines.edu/~rsnieder/Erebus05.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.70.4321 http://www.mines.edu/~rsnieder/Erebus05.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.mines.edu/~rsnieder/Erebus05.pdf coda wave interferometry Geophys. Res. Lett 32 L06304 text 2005 ftciteseerx 2016-01-08T18:51:57Z [1] Multiply–scattered waves typically dominate the late part of the seismic coda in local earthquake seismograms. Small medium changes that have no detectable influence on the first arrivals are amplified by multiple scattering and may thus be readily observed in the coda. We exploit this idea using Coda Wave Interferometry to monitor temporal changes at Mount Erebus Volcano, Antarctica. Erebus is one of the few volcanoes on Earth with a long–lived convecting lava lake. Large exsolved gas bubbles generate impulsive Strombolian explosions that provide a repeating seismic source of seismic energy propagating through the strongly scattering geology of the volcano. We examined these signals during a particularly active eruptive two–month period between December, 1999 and February, 2000. Early seismograms are highly reproducible throughout this period. During the first month this is also the case for the coda. Approximately midway through this period, however, the seismic coda decorrelates rapidly over a period of several days. This indicates a rapid change in the scattering properties of the volcano, likely reflecting subtle changes in the near–summit magma/conduit system that would not be discernible using direct – or single–scattered seismic wave Text Antarc* Antarctica Unknown Lava Lake ENVELOPE(-128.996,-128.996,55.046,55.046) Mount Erebus ENVELOPE(167.167,167.167,-77.533,-77.533) |
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op_collection_id |
ftciteseerx |
language |
English |
topic |
coda wave interferometry Geophys. Res. Lett 32 L06304 |
spellingShingle |
coda wave interferometry Geophys. Res. Lett 32 L06304 Er Grêt Roel Snieder Richard C. Aster Philip R. Kyle Monitoring rapid temporal changes in a volcano with coda wave interferometry, Geophys |
topic_facet |
coda wave interferometry Geophys. Res. Lett 32 L06304 |
description |
[1] Multiply–scattered waves typically dominate the late part of the seismic coda in local earthquake seismograms. Small medium changes that have no detectable influence on the first arrivals are amplified by multiple scattering and may thus be readily observed in the coda. We exploit this idea using Coda Wave Interferometry to monitor temporal changes at Mount Erebus Volcano, Antarctica. Erebus is one of the few volcanoes on Earth with a long–lived convecting lava lake. Large exsolved gas bubbles generate impulsive Strombolian explosions that provide a repeating seismic source of seismic energy propagating through the strongly scattering geology of the volcano. We examined these signals during a particularly active eruptive two–month period between December, 1999 and February, 2000. Early seismograms are highly reproducible throughout this period. During the first month this is also the case for the coda. Approximately midway through this period, however, the seismic coda decorrelates rapidly over a period of several days. This indicates a rapid change in the scattering properties of the volcano, likely reflecting subtle changes in the near–summit magma/conduit system that would not be discernible using direct – or single–scattered seismic wave |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Er Grêt Roel Snieder Richard C. Aster Philip R. Kyle |
author_facet |
Er Grêt Roel Snieder Richard C. Aster Philip R. Kyle |
author_sort |
Er Grêt |
title |
Monitoring rapid temporal changes in a volcano with coda wave interferometry, Geophys |
title_short |
Monitoring rapid temporal changes in a volcano with coda wave interferometry, Geophys |
title_full |
Monitoring rapid temporal changes in a volcano with coda wave interferometry, Geophys |
title_fullStr |
Monitoring rapid temporal changes in a volcano with coda wave interferometry, Geophys |
title_full_unstemmed |
Monitoring rapid temporal changes in a volcano with coda wave interferometry, Geophys |
title_sort |
monitoring rapid temporal changes in a volcano with coda wave interferometry, geophys |
publishDate |
2005 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.70.4321 http://www.mines.edu/~rsnieder/Erebus05.pdf |
long_lat |
ENVELOPE(-128.996,-128.996,55.046,55.046) ENVELOPE(167.167,167.167,-77.533,-77.533) |
geographic |
Lava Lake Mount Erebus |
geographic_facet |
Lava Lake Mount Erebus |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
http://www.mines.edu/~rsnieder/Erebus05.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.70.4321 http://www.mines.edu/~rsnieder/Erebus05.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766265345899757568 |