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Duration Characteristics of the Mean...

Ghanat, Simon.

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Duration Characteristics of the Mean Horizontal Component of Shallow Crustal Earthquake Records in Active Tectonic Regions.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Duration Characteristics of the Mean Horizontal Component of Shallow Crustal Earthquake Records in Active Tectonic Regions./
作者:	Ghanat, Simon.
面頁冊數:	229 p.
附註:	Source: Dissertation Abstracts International, Volume: 72-07, Section: B, page: .
Contained By:	Dissertation Abstracts International72-07B.
標題:	Geophysics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3453216
ISBN:	9781124611877

Duration Characteristics of the Mean Horizontal Component of Shallow Crustal Earthquake Records in Active Tectonic Regions.
Ghanat, Simon.

Duration Characteristics of the Mean Horizontal Component of Shallow Crustal Earthquake Records in Active Tectonic Regions. - 229 p.

Source: Dissertation Abstracts International, Volume: 72-07, Section: B, page: .

Thesis (Ph.D.)--Arizona State University, 2011.

The focus of this study is statistical characterization of the significant duration of strong ground motion time histories. The significant duration is defined as the time needed to build up between five and seventy-five (SD575) and ninety five percent (SD595) of the energy of a strong motion record. Energy is measured as the integral of the square of the acceleration time history and can be used to capture the potential destructiveness of an earthquake. Correlations of the geometric means of the two significant duration measures (SD575 and SD595) with source, path, and near surface site parameters have been investigated using the geometric mean of 2,690 pairs of recorded horizontal strong ground motion data from 129 earthquakes in active plate margins. These time histories correspond to moment magnitudes between 4.8 and 7.9, site to source distances up to 200 km, and near surface shear wave velocity ranging from 120 to 2250 m/s. Empirical relationships have been developed based upon the simple functional forms, and observed correlations. The coefficients of the independent variables in these empirical relationships have been determined through non-linear regression analysis using a random-effects model. It is found that significant duration measures correlate well with magnitude, site-to-source distance, and near surface shear wave velocity. The influence of the depth to top of rupture, depth to the shear wave velocity of 1000 m/s and the style of faulting were not found to be statistically significant. Comparison of the empirical relationship developed in this study with existing empirical relationships for the significant duration shows good agreement at intermediate magnitudes (M 6.5). However, at larger and smaller magnitude, the differences between the correlations developed in this study and those from previous studies are significant.

ISBN: 9781124611877Subjects--Topical Terms:

535228
Geophysics.

Duration Characteristics of the Mean Horizontal Component of Shallow Crustal Earthquake Records in Active Tectonic Regions.
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