東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Broadband waveform modeling and its ...

Zhu, Lupei.

FindBook

Google Book

Amazon

博客來

Broadband waveform modeling and its application to the lithospheric structure of the Tibetan Plateau.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Broadband waveform modeling and its application to the lithospheric structure of the Tibetan Plateau./
作者:	Zhu, Lupei.
面頁冊數:	141 p.
附註:	Source: Dissertation Abstracts International, Volume: 59-07, Section: B, page: 3309.
Contained By:	Dissertation Abstracts International59-07B.
標題:	Geophysics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9842342
ISBN:	9780591966060

Broadband waveform modeling and its application to the lithospheric structure of the Tibetan Plateau.
Zhu, Lupei.

Broadband waveform modeling and its application to the lithospheric structure of the Tibetan Plateau. - 141 p.

Source: Dissertation Abstracts International, Volume: 59-07, Section: B, page: 3309.

Thesis (Ph.D.)--California Institute of Technology, 1998.

This thesis presents a study of the lithospheric structure of the Tibetan Plateau. The data are broadband seismic waveforms recorded during the 1991-1992 Sino-US Tibet PASSCAL experiment. Several techniques are developed to retrieve the structural information from these waveforms at ranges from near-field to teleseismic distances.

ISBN: 9780591966060Subjects--Topical Terms:

535228
Geophysics.

Broadband waveform modeling and its application to the lithospheric structure of the Tibetan Plateau.
LDR:03003nmm a2200277 4500 001 2067164
005 20160226101814.5
008 170521s1998 ||||||||||||||||| ||eng d
020 $a 9780591966060
035 $a (MiAaPQ)AAI9842342
035 $a AAI9842342
040 $a MiAaPQ $c MiAaPQ
100 1 $a Zhu, Lupei. $3 3182013
245 1 0 $a Broadband waveform modeling and its application to the lithospheric structure of the Tibetan Plateau.
300 $a 141 p.
500 $a Source: Dissertation Abstracts International, Volume: 59-07, Section: B, page: 3309.
502 $a Thesis (Ph.D.)--California Institute of Technology, 1998.
520 $a This thesis presents a study of the lithospheric structure of the Tibetan Plateau. The data are broadband seismic waveforms recorded during the 1991-1992 Sino-US Tibet PASSCAL experiment. Several techniques are developed to retrieve the structural information from these waveforms at ranges from near-field to teleseismic distances.
520 $a First, a 1-D average crustal velocity model is derived from regional earthquakes, based on travel times of various phases and modeling waveforms of Love waves. The source mechanisms and depths of 62 events in Tibet and surrounding areas are determined using this 1-D model. The result is that most earthquakes occur at shallow depths, between 5 and 15 km. Thrust faulting source mechanisms are dominant on the margins of the plateau. Within the plateau but at locations with surface elevation less than 5 km, source mechanisms are a mixture of strike-slip and thrust. In areas with surface elevation higher than 5 km, all events show consistently normal faulting, which indicates that a large portion of the high plateau is under EW extension. I also found three sub-crustal earthquakes at depth range between 70 and 80 km in southern Tibet. Their existence suggests relatively cold uppermost mantle in the region.
520 $a The lateral variations are investigated using teleseismic waveforms. Crustal thickness and Vp/Vs ratio at each station are estimated using receiver function analysis. I found crustal Vp/Vs ratios to range from 1.75 to 2.0 and crustal thicknesses from 55 to 80 km. On average the northern Tibetan crust is 20 km thinner and has a higher Vp/Vs ratio than the southern part. Teleseismic P and S arrival delays exhibit strong azimuthal and lateral variation. The uniform surface elevation of Tibet coupled with large variations of crustal thickness and upper mantle velocity suggest that the north-central plateau is supported partly by a hot upper mantle. A low velocity layer is found in the mid-crust of northern Tibet. Modeling the anomalous "double-pulse" P waveform at the northernmost station reveals a 15 to 20 km Moho offset between the plateau and the Qaidam Basin.
590 $a School code: 0037.
650 4 $a Geophysics. $3 535228
690 $a 0373
710 2 $a California Institute of Technology. $3 726902
773 0 $t Dissertation Abstracts International $g 59-07B.
790 $a 0037
791 $a Ph.D.
792 $a 1998
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9842342