1. ZONAS SISMICAS
Dr. Victor A. Huèrfano

2. PLACAS TECTONICAS: Sismicidad Mundial
CARIBBEAN PLATE
PUERTO RICO

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

4. 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

5. EARTHQUAKES, TSUNAMIS and Active Volcanoes 1842 1918 1867 1780 1946
1670 MM = VII, San Germán y San Juan
1787 = 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)

6. (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

7. TSUNAMIS in the Atlantic

8. ZONAS SISMICAS Y SISMICIDAD LOCAL

9. MEDICIONES DE GPS
Jansma, 2000

10. Clinton, Cua, Huèrfano, von Hillebrandt and Martinez
2006

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

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

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

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

15. PUERTO RICO FAULT SYSTEMS
(N. Grindlay )

16. PUERTO RICO FAULT SYSTEMS
(W. McCann )

17. 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 )

18. PR-TWMP Numerical Data Base

19. QUE PODEMOS HACER?