Moho-depth and subglacial sedimentary layer thickness in the Wilkes Basin from Receiver Function Analysis
Wilkes Basin lies to the east of the Transantarctic Mountains. The origin of this sub-glacial basin is still controversial. Flexural uplift of the Transantarctic Mountains has been suggested as the geophysical process which generated the basin (Stern & ien Brink, 1989). Other studies proposed a...
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ftingv:oai:www.earth-prints.org:2122/3199 2023-05-15T13:51:39+02:00 Moho-depth and subglacial sedimentary layer thickness in the Wilkes Basin from Receiver Function Analysis Piana Agostinetti, N. Roselli, P. Cattaneo, M. Amato, A. Piana Agostinetti, N.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia Roselli, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia Cattaneo, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia Amato, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia 2005-10 http://hdl.handle.net/2122/3199 en eng IASPEI-General Assembly http://hdl.handle.net/2122/3199 open receiver functios Antarctica 01. Atmosphere::01.03. Magnetosphere::01.03.04. Structure and dynamics Poster session 2005 ftingv 2022-07-29T06:04:42Z Wilkes Basin lies to the east of the Transantarctic Mountains. The origin of this sub-glacial basin is still controversial. Flexural uplift of the Transantarctic Mountains has been suggested as the geophysical process which generated the basin (Stern & ien Brink, 1989). Other studies proposed a continental rift structure for this region (Ferraccioli et al., 2001). The two models differ mainly in the crustal structure predicted beneath the basin. In the former, crustal thickning is expected to be originated from the high rigidity of the East Antarctic Craton lithosphere. Otherwise, the rift structure hypothesis is consistent with a broad crustal thinning. During the WIBEM 2003 campaign, we deployed five broadband seismic stations across the basin. We selected high signal/noise teleseismic recording to compute a data-set of receiver functions. We applied a classical inversion scheme, the Neighbourhood Algorithm, to our data-set. Here, two different and complementary studies are presented. We constrain the Moho geometry beneath the Wilkes Basin from the analysis of low-frequency P-to-S conversion at the base of the crust. Also, we investigate the nature of the basin mapping the presence of subglacial sediments using the P-to-S conversion at the ice-bedrock interface. Published Chile 3.3. Geodinamica e struttura dell'interno della Terra open Other/Unknown Material Antarc* Antarctic Antarctica Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) Antarctic Transantarctic Mountains |
institution |
Open Polar |
collection |
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) |
op_collection_id |
ftingv |
language |
English |
topic |
receiver functios Antarctica 01. Atmosphere::01.03. Magnetosphere::01.03.04. Structure and dynamics |
spellingShingle |
receiver functios Antarctica 01. Atmosphere::01.03. Magnetosphere::01.03.04. Structure and dynamics Piana Agostinetti, N. Roselli, P. Cattaneo, M. Amato, A. Moho-depth and subglacial sedimentary layer thickness in the Wilkes Basin from Receiver Function Analysis |
topic_facet |
receiver functios Antarctica 01. Atmosphere::01.03. Magnetosphere::01.03.04. Structure and dynamics |
description |
Wilkes Basin lies to the east of the Transantarctic Mountains. The origin of this sub-glacial basin is still controversial. Flexural uplift of the Transantarctic Mountains has been suggested as the geophysical process which generated the basin (Stern & ien Brink, 1989). Other studies proposed a continental rift structure for this region (Ferraccioli et al., 2001). The two models differ mainly in the crustal structure predicted beneath the basin. In the former, crustal thickning is expected to be originated from the high rigidity of the East Antarctic Craton lithosphere. Otherwise, the rift structure hypothesis is consistent with a broad crustal thinning. During the WIBEM 2003 campaign, we deployed five broadband seismic stations across the basin. We selected high signal/noise teleseismic recording to compute a data-set of receiver functions. We applied a classical inversion scheme, the Neighbourhood Algorithm, to our data-set. Here, two different and complementary studies are presented. We constrain the Moho geometry beneath the Wilkes Basin from the analysis of low-frequency P-to-S conversion at the base of the crust. Also, we investigate the nature of the basin mapping the presence of subglacial sediments using the P-to-S conversion at the ice-bedrock interface. Published Chile 3.3. Geodinamica e struttura dell'interno della Terra open |
author2 |
Piana Agostinetti, N.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia Roselli, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia Cattaneo, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia Amato, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia |
format |
Other/Unknown Material |
author |
Piana Agostinetti, N. Roselli, P. Cattaneo, M. Amato, A. |
author_facet |
Piana Agostinetti, N. Roselli, P. Cattaneo, M. Amato, A. |
author_sort |
Piana Agostinetti, N. |
title |
Moho-depth and subglacial sedimentary layer thickness in the Wilkes Basin from Receiver Function Analysis |
title_short |
Moho-depth and subglacial sedimentary layer thickness in the Wilkes Basin from Receiver Function Analysis |
title_full |
Moho-depth and subglacial sedimentary layer thickness in the Wilkes Basin from Receiver Function Analysis |
title_fullStr |
Moho-depth and subglacial sedimentary layer thickness in the Wilkes Basin from Receiver Function Analysis |
title_full_unstemmed |
Moho-depth and subglacial sedimentary layer thickness in the Wilkes Basin from Receiver Function Analysis |
title_sort |
moho-depth and subglacial sedimentary layer thickness in the wilkes basin from receiver function analysis |
publishDate |
2005 |
url |
http://hdl.handle.net/2122/3199 |
geographic |
Antarctic Transantarctic Mountains |
geographic_facet |
Antarctic Transantarctic Mountains |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
IASPEI-General Assembly http://hdl.handle.net/2122/3199 |
op_rights |
open |
_version_ |
1766255651667836928 |