CRUSTAL VELOCITY MODELS OF SHEAR WAVES IN EAST ANTARCTICA BY RECEIVER FUNCTION INVERSION OF BROADBAND WAVEFORMS
Receiver functions from teleseismic earthquakes recorded with broadband seismographs at Dumont d'Urville Station (66.7°S, 140.0°E; DRV) and Mawson Station (67.6°S, 62.9°E; MAW), East Antarctica, are inverted for shear wave velocity models of the crust and uppermost mantle beneath the recording...
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National Institute of Polar Research
1996
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ftnipr:oai:nipr.repo.nii.ac.jp:00002819 2023-05-15T13:04:17+02:00 CRUSTAL VELOCITY MODELS OF SHEAR WAVES IN EAST ANTARCTICA BY RECEIVER FUNCTION INVERSION OF BROADBAND WAVEFORMS カナオ マサキ クボ アツキ シブタニ タクオ Masaki KANAO Atsuki KUBO Takuo SHIBUTANI 1996-09 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2819 http://id.nii.ac.jp/1291/00002819/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2819&item_no=1&attribute_id=18&file_no=1 en eng National Institute of Polar Research Disaster Prevention Research Institute, Kyoto University https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2819 http://id.nii.ac.jp/1291/00002819/ AA1072335X Proceedings of the NIPR Symposium on Antarctic Geosciences, 9, 1-15(1996-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2819&item_no=1&attribute_id=18&file_no=1 broadband waveforms teleseismic receiver functions shear wave velocity crustal structure regional metamorphism Departmental Bulletin Paper P(論文) 1996 ftnipr 2022-11-26T19:42:17Z Receiver functions from teleseismic earthquakes recorded with broadband seismographs at Dumont d'Urville Station (66.7°S, 140.0°E; DRV) and Mawson Station (67.6°S, 62.9°E; MAW), East Antarctica, are inverted for shear wave velocity models of the crust and uppermost mantle beneath the recording stations. The obtained models are compared with the previously obtained ones of Syowa Station (69.0°S, 39.6°E; SYO) to clarify the relationship with regional tectonic history. A crustal velocity model around DRV derived from 18 events indicates a rather sharp Moho at a depth of 38km and somewhat less fluctuation within the crust. It might have originated in the Early Proterozoic metamorphism in Adelie Land. High velocity zones in the upper crust together with low velocity discontinuity of the mid-crust may also have a relation to past tectono-thermal activity. A crustal velocity model around MAW determined by using 20 events has a very sharp Moho at 42km depth that might have developed under high pressure and a thickened crust when a metamorphic event occurred around Mac. Robertson Land in the Late Proterozoic ages. Variation in the crustal velocities at MAW is intermediate among the three stations, which may also have been created by the regional metamorphism. Report Adelie Land Antarc* Antarctica East Antarctica Mac Robertson Land Mac. Robertson Land National Institute of Polar Research Repository, Japan East Antarctica Syowa Station Dumont d'Urville ENVELOPE(140.017,140.017,-66.667,-66.667) Dumont-d'Urville ENVELOPE(140.013,140.013,-66.667,-66.667) Mawson Station ENVELOPE(62.874,62.874,-67.603,-67.603) Dumont d'Urville Station ENVELOPE(140.000,140.000,-66.667,-66.667) Mac. Robertson Land ENVELOPE(65.000,65.000,-70.000,-70.000) |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
broadband waveforms teleseismic receiver functions shear wave velocity crustal structure regional metamorphism |
spellingShingle |
broadband waveforms teleseismic receiver functions shear wave velocity crustal structure regional metamorphism カナオ マサキ クボ アツキ シブタニ タクオ Masaki KANAO Atsuki KUBO Takuo SHIBUTANI CRUSTAL VELOCITY MODELS OF SHEAR WAVES IN EAST ANTARCTICA BY RECEIVER FUNCTION INVERSION OF BROADBAND WAVEFORMS |
topic_facet |
broadband waveforms teleseismic receiver functions shear wave velocity crustal structure regional metamorphism |
description |
Receiver functions from teleseismic earthquakes recorded with broadband seismographs at Dumont d'Urville Station (66.7°S, 140.0°E; DRV) and Mawson Station (67.6°S, 62.9°E; MAW), East Antarctica, are inverted for shear wave velocity models of the crust and uppermost mantle beneath the recording stations. The obtained models are compared with the previously obtained ones of Syowa Station (69.0°S, 39.6°E; SYO) to clarify the relationship with regional tectonic history. A crustal velocity model around DRV derived from 18 events indicates a rather sharp Moho at a depth of 38km and somewhat less fluctuation within the crust. It might have originated in the Early Proterozoic metamorphism in Adelie Land. High velocity zones in the upper crust together with low velocity discontinuity of the mid-crust may also have a relation to past tectono-thermal activity. A crustal velocity model around MAW determined by using 20 events has a very sharp Moho at 42km depth that might have developed under high pressure and a thickened crust when a metamorphic event occurred around Mac. Robertson Land in the Late Proterozoic ages. Variation in the crustal velocities at MAW is intermediate among the three stations, which may also have been created by the regional metamorphism. |
format |
Report |
author |
カナオ マサキ クボ アツキ シブタニ タクオ Masaki KANAO Atsuki KUBO Takuo SHIBUTANI |
author_facet |
カナオ マサキ クボ アツキ シブタニ タクオ Masaki KANAO Atsuki KUBO Takuo SHIBUTANI |
author_sort |
カナオ マサキ |
title |
CRUSTAL VELOCITY MODELS OF SHEAR WAVES IN EAST ANTARCTICA BY RECEIVER FUNCTION INVERSION OF BROADBAND WAVEFORMS |
title_short |
CRUSTAL VELOCITY MODELS OF SHEAR WAVES IN EAST ANTARCTICA BY RECEIVER FUNCTION INVERSION OF BROADBAND WAVEFORMS |
title_full |
CRUSTAL VELOCITY MODELS OF SHEAR WAVES IN EAST ANTARCTICA BY RECEIVER FUNCTION INVERSION OF BROADBAND WAVEFORMS |
title_fullStr |
CRUSTAL VELOCITY MODELS OF SHEAR WAVES IN EAST ANTARCTICA BY RECEIVER FUNCTION INVERSION OF BROADBAND WAVEFORMS |
title_full_unstemmed |
CRUSTAL VELOCITY MODELS OF SHEAR WAVES IN EAST ANTARCTICA BY RECEIVER FUNCTION INVERSION OF BROADBAND WAVEFORMS |
title_sort |
crustal velocity models of shear waves in east antarctica by receiver function inversion of broadband waveforms |
publisher |
National Institute of Polar Research |
publishDate |
1996 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2819 http://id.nii.ac.jp/1291/00002819/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2819&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(140.017,140.017,-66.667,-66.667) ENVELOPE(140.013,140.013,-66.667,-66.667) ENVELOPE(62.874,62.874,-67.603,-67.603) ENVELOPE(140.000,140.000,-66.667,-66.667) ENVELOPE(65.000,65.000,-70.000,-70.000) |
geographic |
East Antarctica Syowa Station Dumont d'Urville Dumont-d'Urville Mawson Station Dumont d'Urville Station Mac. Robertson Land |
geographic_facet |
East Antarctica Syowa Station Dumont d'Urville Dumont-d'Urville Mawson Station Dumont d'Urville Station Mac. Robertson Land |
genre |
Adelie Land Antarc* Antarctica East Antarctica Mac Robertson Land Mac. Robertson Land |
genre_facet |
Adelie Land Antarc* Antarctica East Antarctica Mac Robertson Land Mac. Robertson Land |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2819 http://id.nii.ac.jp/1291/00002819/ AA1072335X Proceedings of the NIPR Symposium on Antarctic Geosciences, 9, 1-15(1996-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2819&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766356477347364864 |