New Great Earthquakes in Peru ?….?
Transcription
New Great Earthquakes in Peru ?….?
New Great Earthquakes in Peru….? Peru ? Hernando Tavera NAZCA PLATE AMERICA PLATE America Plate Nazca Plate Cordillera Andes Great Earthquakes 1900 - 2010 > 8.0 Mw 7.0<Mw<8.0 Peruvian Seismic Map 1964 – 2008 (M 4.0) (M>4.0) S i i T Seismic Tectonic i Great Earthquakes Moderate Earthquakes Nazca Plate SOUTHERN CE ENTRAL NORTHE ERN Historical Great Earthquakes in Peru Great Earthquakes Southern Peru (Giovanni and Beck, 2002) 1604 8 4Mw 8.4Mw 1784 8 0Mw 8.0Mw 1868 9.0Mw 2001 8.0Mw Great Earthquakes in ChileChile-Peru ? Century XIX 1746 1868 1877 ? 1906 1835 2010 ? Great Earthquakes in ChileChile-Peru ? Century XIX Century XX 1746 1868 1877 ? 1906 1835 ? 2010 Great Earthquakes in ChileChile-Peru ? Century XIX Century XX Century XXI 1746 1868 1877 ? 1906 1835 2010 ? Great Earthquakes in ChileChile-Peru ? Century XIX Century XX Century XXI ? 1746 1868 1877 ? ? 1906 1835 ? 2010 The distribution Seismicity analysis Î “b” Value Distribution in Occidental Border of Peru Prof. Wyss Methodology Asperity 4 Piura y Lambayeque (4.2º a 7.2ºS). A Asperity it 3 Lima y Ancash (9.5° a 13.3º S). Asperity 2 Norte de Arequipa (15.3º S a 16º S). Asperity 1 Arequipa, Moquegua y Tacna (16.5º a 19º S). 13 Condori et al 2011 “b” Value Distribution in Occidental Border of Peru Asperity 4 8.0-8.5 Mw Piura y Lambayeque (4.2º a 7.2ºS). A Asperity it 3 8.5-9.0 Mw Lima y Ancash (9.5° a 13.3º S). Asperity 2 7.0 Mw Norte de Arequipa (15.3º S a 16º S). Asperity 1 8.5.9.0 Mw Arequipa, Moquegua y Tacna (16.5º a 19º S). 14 GPS inter-seismic Deformation in Central and Southern Peru Seismic Coupling in Peru Fuerte high g Lima 1974 (M≈8) Pisco 2007 (Mw8.0) The historical great earthquakes is in high coupling zone C Coupling Arequipa 2001 (Mw8.2) Aco oplamien nto Nazca 1996 (Mw7.7) Slow Debil New high coupling zones in Peru Fuerte LIMA high Mw=8‐8.5 ??? ng Couplin Acoplamiento Southern Peru Northern Chile Slow Mw=8‐9 ??? Debil Perfettini et al (2010) Mw ~ 9 Historical Earthquakes Lima: Mw~8-8.5 Mw~7-7.5 Ilo-Tacna: Mw~8.5 Mw~8 8 Mw~9 9 Future Earthquakes Adobe Building in Pisco City PISCO 2007 Adobe Building in Lima City…? Lima City – Miraflores and “costanera” zone New building, Miraflores, Lima City Sismología – Instituto Geofisico del Perú Seismic Intensity – Lima Earthquake ,October 1974 In others districts…. Several houses with walls without columns The second l l level This on first The Cruise TITANIC….? News Risk in Lima City….. Commerce panels Electrical cables bl Sismología – Instituto Geofisico del Perú The invasion of commercial panels Sismología – Instituto Geofisico del Perú The Cathedral of AREQUIPA city in 1865 3 years before… The Cathedral of AREQUIPA AFTER GREAT EARTHQUAKE 1868 9.0 Mw 1868 9.0 Mw The NEW Cathedral of AREQUIPA 1945 The CATHEDRAL of AREQUIPA destroyed by an new EARTHQUAKE 2001 8.0 Mw After an year …… 2002 ¿The NEW Cathedral waits the NEXT Earthquake….!! G R A C I A S…!!!!
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