Three-dimensional admittance analysis of lithospheric elastic thickness over the Louisville Ridge  被引量:1

Three-dimensional admittance analysis of lithospheric elastic thickness over the Louisville Ridge

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作  者:Minzhang Hu Hui Li Chongyang Shen Lelin Xing Hongtao Hao 

机构地区:[1]Key Laboratory of Earthquake Geodesy,Institute of Seismology,China Earthquake Administration

出  处:《Earthquake Science》2016年第2期117-125,共9页地震学报(英文版)

基  金:supported financially by the Key Foundation of the Institute of Seismology,China Earthquake Administration (No. IS201506205);the National Natural Science Foundation of China (Nos. 41504017, 41204019, 41304003)

摘  要:Using bathymetry and altimetric gravity anomalies, a 1°×9 1° lithospheric effective elastic thickness(Te) model over the Louisville Ridge and its adjacent regions is calculated using the moving window admittance technique. For comparison, three bathymetry models are used: general bathymetric charts of the oceans, SIO V15.1,and BAT_VGG. The results show that BAT_VGG is more suitable for calculating T e than the other two models. T e along the Louisville Ridge was re-evaluated. The southeast of the ridge has a medium Te of 10–20 km, while Te increases dramatically seaward of the Tonga-Kermadec trench as a result of the collision of the Pacific and IndoAustralian plates.Using bathymetry and altimetric gravity anomalies, a 1°×9 1° lithospheric effective elastic thickness(Te) model over the Louisville Ridge and its adjacent regions is calculated using the moving window admittance technique. For comparison, three bathymetry models are used: general bathymetric charts of the oceans, SIO V15.1,and BAT_VGG. The results show that BAT_VGG is more suitable for calculating T e than the other two models. T e along the Louisville Ridge was re-evaluated. The southeast of the ridge has a medium Te of 10–20 km, while Te increases dramatically seaward of the Tonga-Kermadec trench as a result of the collision of the Pacific and IndoAustralian plates.

关 键 词:Three-dimensional admittance analysis Lithospheric effective elastic thickness BATHYMETRY Gravity Louisville Ridge 

分 类 号:P736.1[天文地球—海洋地质]

 

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