Scholarlink

<p>In this research, we have obtained the slip distribution of the 1996 Nazca earthquake, using a teleseismic waveform inversion method; then, we have conducted the numerical modelling of the tsunami propagation. The results reveal a complex rupture process with a duration around 70 s for a mean rupture velocity of 2.5 km/s. The maximum slip was 2.9 m and the seismic moment was 5<InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10950_2025_10300_Article_IEq1.gif" Format="GIF" Height="17" Rendition="HTML" Resolution="72" Type="Linedraw" Width="44" /> </InlineMediaObject> <EquationSource Format="TEX">\(\times 10^{20}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mo>×</mo> <msup> <mn>10</mn> <mn>20</mn> </msup> </mrow> </math></EquationSource> </InlineEquation> Nm, equivalent to a moment magnitude of Mw 7.7. The coseismic deformation field, due to the slip distribution obtained in this research, was used to conduct the tsunami numerical modelling of the 1996 Nazca earthquake. The reported uplift in the coast of San Juan de Marcona was 20 cm and the simulated uplift was 26 cm. This earthquake triggered a small tsunami with only local impact. The maximum simulated tsunami high at San Juan de Marcona tidal station was 1.65 m while the reported value was 1.80 m. We suggest that the 1996 Nazca earthquake can be considered as a part of the 1940-2007 central Peru earthquakes series.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Numerical modelling of the 1996 Nazca Perú earthquake (Mw 7.7) and tsunami

  • 期刊论文

  • 发表日期：

    2025年5月26日

查看全文
  • Cesar Jimenez

摘要

In this research, we have obtained the slip distribution of the 1996 Nazca earthquake, using a teleseismic waveform inversion method; then, we have conducted the numerical modelling of the tsunami propagation. The results reveal a complex rupture process with a duration around 70 s for a mean rupture velocity of 2.5 km/s. The maximum slip was 2.9 m and the seismic moment was 5 \(\times 10^{20}\) × 10 20 Nm, equivalent to a moment magnitude of Mw 7.7. The coseismic deformation field, due to the slip distribution obtained in this research, was used to conduct the tsunami numerical modelling of the 1996 Nazca earthquake. The reported uplift in the coast of San Juan de Marcona was 20 cm and the simulated uplift was 26 cm. This earthquake triggered a small tsunami with only local impact. The maximum simulated tsunami high at San Juan de Marcona tidal station was 1.65 m while the reported value was 1.80 m. We suggest that the 1996 Nazca earthquake can be considered as a part of the 1940-2007 central Peru earthquakes series.