| Records |
| Author |
Ryo Okuwaki, Stephen P. Hicks, Timothy J. Craig, Wenyuan Fan, Saskia Goes, Tim J. Wright, Yuji Yagi |
| Title |
Illuminating a Contorted Slab With a Complex Intraslab Rupture Evolution During the 2021 Mw 7.3 East Cape, New Zealand Earthquake |
Type |
Journal |
| Year |
2021 |
Publication |
Geophysical Research Letters |
Abbreviated Journal |
|
| Volume |
48 |
Issue |
24 |
Pages |
e2021GL095117 |
| Keywords |
earthquake rupture finite-fault inversion Hikurangi intraslab earthquakes slab geometry source imaging |
| Abstract |
The state-of-stress within subducting oceanic plates controls rupture processes of deep intraslab earthquakes. However, little is known about how the large-scale plate geometry and the stress regime relate to the physical nature of the deep intraslab earthquakes. Here we find, by using globally and locally observed seismic records, that the moment magnitude 7.3 2021 East Cape, New Zealand earthquake was driven by a combination of shallow trench-normal extension and unexpectedly, deep trench-parallel compression. We find multiple rupture episodes comprising a mixture of reverse, strike-slip, and normal faulting. Reverse faulting due to the trench-parallel compression is unexpected given the apparent subduction direction, so we require a differential buoyancy-driven stress rotation, which contorts the slab near the edge of the Hikurangi plateau. Our finding highlights that buoyant features in subducting plates may cause diverse rupture behavior of intraslab earthquakes due to the resulting heterogeneous stress state within slabs. |
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133 |
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| ISSN |
1944-8007 |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8313 |
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| Author |
Afsaneh Mohammadzaheri, Karin Sigloch, Kasra Hosseini, Mitchell G. Mihalynuk |
| Title |
Subducted Lithosphere Under South America From Multifrequency P Wave Tomography |
Type |
Journal |
| Year |
2021 |
Publication |
Journal of Geophysical Research: Solid Earth |
Abbreviated Journal |
|
| Volume |
126 |
Issue |
6 |
Pages |
e2020JB020704 |
| Keywords |
Andes intra-arc intra-oceanic subduction seismic tomography South America structure of the mantel |
| Abstract |
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| Programme |
133 |
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| ISSN |
2169-9356 |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
7991 |
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| Author |
L A Ermert, K Sager, T Nissen-Meyer, A Fichtner |
| Title |
Multifrequency inversion of global ambient seismic sources |
Type |
Journal |
| Year |
2021 |
Publication |
Geophysical Journal International |
Abbreviated Journal |
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| Volume |
225 |
Issue |
3 |
Pages |
1616-1623 |
| Keywords |
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| Abstract |
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| Programme |
133 |
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| ISSN |
0956-540X |
ISBN |
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Approved |
yes |
| Call Number |
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Serial |
7992 |
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| Author |
Jun Xie, Risheng Chu, Sidao Ni |
| Title |
Evaluating Global Tomography Models With Antipodal Ambient Noise Cross-Correlation Functions |
Type |
Journal |
| Year |
2021 |
Publication |
Journal of Geophysical Research: Solid Earth |
Abbreviated Journal |
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| Volume |
126 |
Issue |
3 |
Pages |
e2020JB020444 |
| Keywords |
ambient noise cross-correlation functions antipodal surface waves mantle heterogeneity tomography model evaluation |
| Abstract |
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| Programme |
133 |
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| ISSN |
2169-9356 |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
7993 |
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| Author |
A. Baranov, R. Tenzer, A. Morelli |
| Title |
Updated Antarctic crustal model |
Type |
Journal |
| Year |
2021 |
Publication |
Gondwana Research |
Abbreviated Journal |
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| Volume |
89 |
Issue |
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Pages |
1-18 |
| Keywords |
Antarctica Crustal structure Gondwana Sediments |
| Abstract |
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| Programme |
133 |
| Campaign |
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| Address |
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| Corporate Author |
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| Publisher |
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Place of Publication |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
1342-937X |
ISBN |
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Medium |
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| Area |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
7994 |
| Permanent link to this record |
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| Author |
Lucia Gualtieri, Etienne Bachmann, Frederik J Simons, Jeroen Tromp |
| Title |
Generation of secondary microseism Love waves: effects of bathymetry, 3-D structure and source seasonality |
Type |
Journal |
| Year |
2021 |
Publication |
Geophysical Journal International |
Abbreviated Journal |
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| Volume |
226 |
Issue |
1 |
Pages |
192-219 |
| Keywords |
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| Abstract |
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| Programme |
133 |
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| ISSN |
0956-540X |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8016 |
| Permanent link to this record |
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| Author |
Robert E. Anthony, Adam T. Ringler, Michael DuVernois, Kent R. Anderson, David C. Wilson |
| Title |
Six Decades of Seismology at South Pole, Antarctica: Current Limitations and Future Opportunities to Facilitate New Geophysical Observations |
Type |
Journal |
| Year |
2021 |
Publication |
Seismological Research Letters |
Abbreviated Journal |
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| Volume |
92 |
Issue |
5 |
Pages |
2718-2735 |
| Keywords |
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| Abstract |
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| Programme |
133 |
| Campaign |
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| Address |
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| Corporate Author |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0895-0695 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8018 |
| Permanent link to this record |
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| Author |
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| Title |
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Type |
Journal |
| Year |
2021 |
Publication |
Natural Hazards and Earth System Sciences Discussions |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
1-25 |
| Keywords |
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| Abstract |
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| Programme |
133 |
| Campaign |
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| Address |
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| Corporate Author |
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| Publisher |
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| Series Editor |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
1561-8633 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8019 |
| Permanent link to this record |
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| Author |
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| Title |
Preface to the Focus Section on European Seismic Networks and Associated Services and Products |
Type |
Journal |
| Year |
2021 |
Publication |
Seismological Research Letters |
Abbreviated Journal |
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| Volume |
92 |
Issue |
3 |
Pages |
1483-1490 |
| Keywords |
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| Abstract |
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| Programme |
133 |
| Campaign |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0895-0695 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8429 |
| Permanent link to this record |
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| Author |
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| Title |
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Type |
Journal |
| Year |
2021 |
Publication |
|
Abbreviated Journal |
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| Volume |
118 |
Issue |
2 |
Pages |
245-275 |
| Keywords |
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| Abstract |
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| Programme |
1217 |
| Campaign |
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| Address |
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| Corporate Author |
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| Publisher |
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Place of Publication |
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| Series Editor |
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ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
|
Approved |
yes |
| Call Number |
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Serial |
8690 |
| Permanent link to this record |
