m7.3 honduras earthquake of 28 may 2009 with the global · 2009. 6. 17. · 1973 08 28 0950 18.233...
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Map prepared by U.S. Geological SurveyNational Earthquake Information Center28 May 2009Map not approved for release by Director USGS
EARTHQUAKE SUMMARY MAPU.S. DEPARTMENT OF THE INTERIORU.S. GEOLOGICAL SURVEY
DISCLAIMERBase map data, such as place names and politicalboundaries, are the best available but may not be current or may contain inaccuracies and thereforeshould not be regarded as having official significance.
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Coban
El ProgresoChiquimulaSolola
SantaRosa JuticalpaChimaltenango
Jalapa GraciasAntigua GuatemalaRetalhuleuMazatenango ComayaguaNueva
OcotepequeLa EsperanzaLa Paz
JutiapaCuilapaChalatenango Yuscaran
AhuachapanSonsonate
SanFrancisco GoteraSan
Vicente OcotalNacaomeSomotoLa Union
JinotegaEsteli
Boaco
Juigalpa Bluefields
JinotepeRivas
Liberia
Alajuela
Corozal
Heredia
PuertoLimon
Puntarenas Cartago El PorvenirBocasdel Toro
Penonome La Palma
Cojutepeque
SanAndres
SanCarlos
NuevaGerona
GeorgeTown
FalmouthLucea
Usulutan
PortMaria
Savanna La MarPortAntonioOrange
WalkMandevilleBlack
River May Pen PortMorantBelize
El CayoBelmopan
StannCreekTown
Flores
RoatanPuntaGorda
TrujilloPuertoBarrios
Huehuetenango PuertoLempiraSalama Yoro
ZacapaSan
Marcos SantaBarbara
SanctiSpiritus
Sincelejo
MonteriaDavid
Veracruz
Leon
Quezaltenango
Matanzas
PinarDel Rio
SantaClara
Tampico Cienfuegos
Guantanamo
Ciego DeAvila
Camaguey VictoriaDe LasTunas Holguin
Manzanillo
SpanishTown
SantiagoDe Cuba
CampecheJalapa
ChetumalMontegoBay
Colon
Villahermosa
Oaxaca TuxtlaGutierrez
La CeibaSan PedroSula
Escuintla
SanMiguel
CholutecaMatagalpa
Chinandega
MasayaGranada
Kingston
Tegucigalpa
Managua
Cartagena
Panama
Merida
Havana
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MIDDLE AMER ICA TRENCH
C A Y M A N T R E N C H
NORTHAMERICA
PLATE
COCOSPLATE
GALAPAGOSPLATE
CARIBBEAN PLATE
PANAMAPLATE
NORTHANDESPLATE
C A R I B B E A N S E A
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D O M .R E P U B L I C
H A I T IJ A M A I C A
C U B A
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B A H A M A S
G u l f o f M e x i c o
G o l f o d eP a n a m a
N a r e sP l a i n
B e r m u d aR i s e
G u a t e m a l aB a s i n
C o c o s Ri d g e
Ca rneg i e Rid ge
A l b a t r o s sP l a t e a u
C o l o m b i a nB a s i n
V e n e z u e l a nB a s i n
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M7.3 Honduras Earthquake of 28 May 2009
0 250 500125Kilometers
Austin
SantaMartaValledupar
SanFelipe MaracaySan Jose
San JuanDe LosMorros
SanCarlos
Colon Sincelejo GuanareBarinasMeridaDavid
San Fernadode Apure
Tlaxcala
CucutaSanCristobal
Bucaramanga
TunjaManizalesPereira Armenia
Ibague VillavicencioNeiva
Popayan
Mobile
Galveston
BatonRouge Tallahassee
Veracruz
Tampa
Saltillo NassauDurango Ciudad
Victoria
MatanzasZacatecas Pinar
Del Rio SantaClaraTampicoSan Luis
Potosi CienfuegosSancti
Spiritus
Aguascalientes Ciego De AvilaTepic CamagueyGuanajuato
VictoriaDe LasTunas
HolguinQueretaro GuantanamoPachucaSantiagoDe Cuba
Campeche PuertoPlataMorelia MaoJalapa
Santiago
Monteria
Colima La VegaCuernavaca San JuanChetumal Montego
Bay La RomanaSanCristobal
San JuanBarahona Mayaguez
PonceSpanishTown
VillahermosaChilpancingoDe Los Bravo
OaxacaAcapulco Tuxtla
GutierrezLa CeibaSan Pedro
SulaQuezaltenango
EscuintlaSanta
AnaNueva San SalvadorSan
MiguelCholutecaMatagalpa
ChinandegaLeon WillemstadMasaya Granada Coro
Toluca
JacksonvilleNewOrleansHoustonSan
Antonio
MiamiMonterrey
Havana
MeridaGuadalajara
Puebla Port-au-PrinceKingston
Guatemala
ManaguaMaracaibo CaracasCartagena
Panama
Medellin
CaliBogota
Tegucigalpa
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DATA SOURCESEARTHQUAKES AND SEISMIC HAZARD USGS, National Earthquake Information Center NOAA, National Geophysical Data Center IASPEI, Centennial Catalog (1900 - 1999) and extensions (Engdahl and Villaseñor, 2002) HDF (unpublished earthquake catalog) (Engdahl, 2003) Global Seismic Hazard Assessment ProgramPLATE TECTONICS AND FAULT MODEL PB2002 (Bird, 2003) Finite Fault Model, Chen Ji, UC Santa Barbara (2007)BASE MAP NIMA and ESRI, Digital Chart of the World USGS, EROS Data Center NOAA GEBCO and GLOBE Elevation Models
0 500 1,000 1,500250Kilometers
Scale
Prepared in cooperation
with the Global Seismographic
Network
Tectonic Setting
Seismic Hazard
Epicentral Region
TECTONIC SUMMARYThe location and focal mechanism of the Honduras earthquake of May 28, 2009,imply that the shock occurred as the result of left-lateral strike-slip faulting onthe Swan Islands Transform Fault, a segment of the boundary between the NorthAmerica and Caribbean plates. In this region the plate boundary accommodatesabout 20 mm/y slip.Previous strong earthquakes along the North America/Caribbean plate boundaryinclude the destructive Guatemala earthquake of February 4, 1976, M 7.5, whichproduced more than 23,000 fatalities. The 1976 earthquake occurred on theMotagua fault, a segment of the plate boundary that lies in southern Guatemala,several hundred kilometers southwest of the plate boundary that ruptured in theMay 28, 2009 shock.
Seismic hazard is expressed as peakground acceleration (PGA) on firmrock, in meters/sec², expected to beexceeded in a 50-yr period with aprobability of 10 percent.
EXPLANATIONMag ≥ 7.0
0 - 69 km70 - 299300 - 600
Plate BoundariesSubductionTransformDivergent
ConvergentActive Volcanoes
RELATIVE PLATE MOTIONSOverwelming the tectonics in this area is theconvergence of the Cocos and Caribbean Plates,with the Cocus plate subducting under the crustalCaribbean Plate at about 75 mm/yr. In the regionof this earthquake, earthquakes define theboundary between the North American andCaribbean Plates, which move past each other atabout 20 mm/yr.
0 500 1,000 1,500250Kilometers
Scale
REFERENCESBird, P., 2003, An updated digital model of plate boundaries: Geochem. Geophys. Geosyst., v. 4, no. 3, pp. 1027- 80.Engdahl, E.R. and Villaseñor, A., 2002, Global Seismicity: 1900 - 1999, chap. 41 of Lee, W.H.K., and others,eds., International Earthquake and Engineering Seismology, Part A: New York, N.Y., Elsevier Academeic Press, 932 p.Engdahl, E.R., Van der Hilst, R.D., and Buland, R.P., 1998, Global teleseismic earthquake relocation with improved trav- el times and procedures for depth determination: Bull. Seism. Soc. Amer., v. 88, p. 722-743.
1:7,086,244Scale
Significant Earthquakes Mag >= 7.1
Year Mon Day Time Lat Long Dep Mag1900 06 21 2052 10.000 -85.500 0 7.21902 04 19 0223 14.000 -91.000 0 7.51902 09 23 2018 16.000 -93.000 0 7.81904 12 20 0544 8.500 -83.000 0 7.21907 12 30 0526 12.100 -86.300 0 7.21914 03 30 0041 17.000 -92.000 150 7.21915 09 07 0120 14.000 -89.000 80 7.41916 02 27 2020 12.000 -90.000 0 7.31916 04 24 0802 11.000 -85.000 0 7.21917 02 20 1929 19.500 -78.500 0 7.21917 12 29 2250 15.000 -97.000 0 7.71921 02 04 0822 15.411 -90.780 35 7.41921 03 28 0749 13.356 -87.361 35 7.21928 03 22 0417 16.127 -96.505 35 7.51928 06 17 0319 16.028 -97.036 35 7.71928 10 09 0301 16.229 -97.550 35 7.51931 01 15 0150 16.053 -96.614 35 7.81935 12 14 2205 14.718 -92.484 35 7.21937 07 26 0347 18.523 -95.878 35 7.21939 12 21 2054 9.986 -84.546 35 7.21941 12 05 2047 8.752 -83.158 35 7.31942 08 06 2337 13.780 -90.913 35 7.71950 10 05 1609 11.000 -85.000 0 7.81950 10 23 1613 14.500 -91.500 0 7.51950 12 14 1415 17.000 -97.500 0 7.31956 10 24 1442 11.619 -86.436 35 7.21965 08 23 1946 16.178 -95.846 10.5 7.41968 08 02 1406 16.494 -97.771 49.8 7.31970 04 29 1401 14.461 -92.760 50.9 7.31973 08 28 0950 18.233 -96.608 80.7 7.31976 02 04 0901 15.297 -89.145 12.1 7.51978 11 29 1952 16.012 -96.602 24.5 7.81982 06 19 0621 13.337 -89.312 73.1 7.31983 04 03 0250 8.777 -83.032 25 7.51990 03 25 1322 9.948 -84.757 22 7.31991 04 22 2156 9.675 -83.072 12.3 7.61992 09 02 0016 11.766 -87.352 45 7.71993 09 10 1912 14.702 -92.656 34 7.21995 10 21 0238 16.842 -93.434 159 7.21999 09 30 1631 16.046 -96.912 40 7.52001 01 13 1733 13.038 -88.661 38 7.72009 05 28 0824 16.729 -86.212 10 7.1
Peak Ground Acceleration in m/sec**2
.2 .4 .8 1.6 2.4 3.2 4.0 4.8
EPICENTRAL REGION
1:20,000,000
1:20,000,000
EPICENTRAL REGION
Note on earthquakes: From 1900 - 1963, earthquakes shown are fromCentennial Catalog, magnitudes greater than 5.5. From 1964 - 2002,earthquakes are from HDF catalog, magnitudes greater than 4.5. From2003 to present, earthquakes are from NEIC, magnitudes greater than 4.5.
A'
Offshore Honduras 28 May 2009 8:24:45 UTC 16.73° N., 86.209° W.Depth 10 kmMw = 7.3 (USGS)Earthquake motion is left lateral strike slip on a fault trending N 65 E, dipping 69 south.At least 6 people killed, 40 injured and more than 130 buildingsdamaged or destroyed in northern Honduras. The central span of a major bridge at El Progreso was destroyed. At least 5 buildings destroyed and 25 damaged in Belize. Felt in much of Belize, El Salvador, Guatemala and Honduras. Also felt in the Cayman Islands and in parts of Colombia, Costa Rica, Cuba, Jamaica, Mexico, Nicaragua and Panama. Seiches were reported in swimming pools at La Ceiba and Roatan and ground cracks and possible liquefaction was observed at Monkey River, Belize.
EXPLANATIONEarthquake Magnitude
5.50 - 5.996.00 - 6.997.00 - 7.998.00 - 8.99
9.00 - 9.99
Earthquake Depth0 - 6970 - 299300 - 700