ZONAS SISMICAS Dr. Victor A. Huèrfano.

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Presentation transcript:

ZONAS SISMICAS Dr. Victor A. Huèrfano

PLACAS TECTONICAS: Sismicidad Mundial CARIBBEAN PLATE PUERTO RICO

BACKGROUND Virgin Islands Lesser Antilles Puerto Rico Dominican Rep. Cuba Lesser Antilles Jamaica Haiti Trinidad

PLATE BOUNDARIES Mona Canyon North America Plate Septentrional Fault Puerto Rico Trench 19ºN Fault Zone Anegada Passage Muertos Trough Caribbean Plate South America Plate Cocos Plate

EARTHQUAKES, TSUNAMIS and Active Volcanoes 1842 1918 1867 1780 1946 1670 MM = VII, San Germán y San Juan 1787 M @7-8,MM = VII-VIII, Costa Norte, Este y Oeste 1867 M =7.3, MM = VIII, Islas Vírgenes, Tsunami 20’ 1918 M = 7.3, MM = VIII, Área Oeste de PR, Tsunami 20’ 1943 M = 7.5, MM = V, Noreste de Puerto Rico EARTHQUAKES, TSUNAMIS and Active Volcanoes 1842 300 (???) casualties 1918 40 (100) casualties 1867 17 casualties 1943 1946 1564 1670 1787 1780 300 (???) casualties 1867 Soufriere 1770 1946 100 (1790) casualties 1692 2000 (???) casualties 1918 Kick’em Jenny Shepherd, et al, (1992)

(Papadopolus e Imamura) ESCALA DE INTENSIDAD DE MAREMOTOS (Papadopolus e Imamura) No felt Scarcely Felt Weak Largely Observed Strong Slightly Damaging Damaging Heavily Damaging Destructive Very destructive Devastating Completely Devastating Intensity H (m) I-V < 1.0 VI 2.0 VII-VIII 4.0 IX-X 8.0 XI 16.0 XII 32.0

TSUNAMIS in the Atlantic

ZONAS SISMICAS Y SISMICIDAD LOCAL

MEDICIONES DE GPS Jansma, 2000

Clinton, Cua, Huèrfano, von Hillebrandt and Martinez 2006

DISTRIBUCION LOCAL DE SISMICIDAD Clinton, Cua, Huèrfano, von Hillebrandt and Martinez (2006)

PUERTO RICO FAULT SYSTEMS (J. Joyce) (P. Dillon) (ten Brink)

PUERTO RICO FAULT SYSTEMS || || || || || || || ( Masson and Scanlon ) || || || || || ||

PUERTO RICO FAULT SYSTEMS || || || || || || || || || || || || || || || || || || || || || || || || || || || ( D. Larue )

PUERTO RICO FAULT SYSTEMS (N. Grindlay )

PUERTO RICO FAULT SYSTEMS (W. McCann )

ZONAS SISMICAS Y MODELAJE NUMERICO PRT-B Segments: 27 Maximum M: 8.0 Recurrence T: 3800 PRT-A Segments: 24 Maximum M: 8.0 Recurrence T: 3800 PUERTO RICO REGION Faults: 102 Segments: 268 Maximum M (Faults): 7.6 Maximum M (Segments): 7.2 Seismic Catalogue: 10031 Waveform Catalogue: 3518 Quakes used: 4422 Depth: ≤ 50 km Offshore Seismicity Completeness: 3.2 Ml (Outside) 19ºN Segments: 16 Maximum M: 7.6 Recurrence T: 3300 SEPTENTRIONAL F. Segments: 14 Maximum M: 7.8 (ref) Recurrence T: 1900 SOMBRERO SZ Segments: 24 Maximum M: 7.7 Recurrence T: 1200 MONA CANYON Segments: 24 Maximum M: 7.5 Recurrence T: 2000 NORTH PLATFORM Segments: 25 Maximum M: 6.8 Recurrence T: 2500 ANEGADA P. Segments: 28 Maximum M: 7.7 Recurrence T: 3700 EASTERN DR. Segments: 9 Maximum M: 7.2 Recurrence T: 800 SOUTHWESTERN Segments: 36 Maximum M: 6.6 Recurrence T: 1800 LEEWARD LZ. Segments: 11 Maximum M: 7.0 Recurrence T: 3000 MUERTOS T. Segments: 28 Maximum M: 7.7 Recurrence T: 3700 ( Huérfano )

PR-TWMP Numerical Data Base

QUE PODEMOS HACER?