M 7.3 Earthquake, Martinique

United States Geological Survey ^ | November 29, 2007

[Strategerist]

Earthquake Details Magnitude 7.3 Date-Time Thursday, November 29, 2007 at 19:00:19 UTC Thursday, November 29, 2007 at 03:00:19 PM at epicenter

Location 14.921°N, 61.264°W Depth 145.4 km (90.4 miles) Region MARTINIQUE REGION, WINDWARD ISLANDS Distances 21 km (13 miles) NW (322°) from Le Morne-Rouge, Saint-Pierre, Martinique 22 km (14 miles) NNW (336°) from Saint-Pierre, Saint-Pierre, Martinique 23 km (14 miles) WNW (296°) from Le Lorrain, La Trinité, Martinique 41 km (25 miles) NNW (331°) from FORT-DE-FRANCE, Martinique 269 km (167 miles) NW (319°) from BRIDGETOWN, Barbados

Location Uncertainty horizontal +/- 5.7 km (3.5 miles); depth +/- 6.9 km (4.3 miles) Parameters Nst=137, Nph=137, Dmin=267.4 km, Rmss=0.8 sec, Gp= 50°, M-type=moment magnitude (Mw), Version=6 Source U.S. Geological Survey, National Earthquake Information Center: World Data Center for Seismology, Denver

Event ID us2007kha5

This event has been reviewed by a seismologist.

[Strategerist]

This was a very deep quake and thus is very unlikely to DIRECTLY create a tsunami..

EXX32 PAAQ 291908 TIBATE

PUBLIC TSUNAMI INFORMATION STATEMENT NUMBER 1 NWS WEST COAST/ALASKA TSUNAMI WARNING CENTER PALMER AK 308 PM AST THU NOV 29 2007

...A STRONG EARTHQUAKE HAS OCCURRED BUT A TSUNAMI IS NOT EXPECTED ALONG THE COASTS OF PUERTO RICO/ THE VIRGIN ISLANDS/ U.S. ATLANTIC AND GULF OF MEXICO STATES/ AND EASTERN CANADIAN PROVINCES...

NO - REPEAT NO - WARNING OR WATCH IS IN EFFECT FOR THESE AREAS.

BASED ON THE DEPTH OF THE EARTHQUAKE WITHIN THE EARTH A WIDESPREAD DAMAGING TSUNAMI IS NOT EXPECTED ALONG THE PUERTO RICO/ VIRGIN ISLANDS/ U.S. ATLANTIC/ EASTERN CANADIAN AND GULF OF MEXICO COASTS. AT COASTAL LOCATIONS WHICH HAVE EXPERIENCED STRONG GROUND SHAKING LOCAL TSUNAMIS ARE POSSIBLE DUE TO UNDERWATER LANDSLIDES.

AT 300 PM ATLANTIC STANDARD TIME ON NOVEMBER 29 AN EARTHQUAKE WITH PRELIMINARY MAGNITUDE 7.3 OCCURRED NEAR THE WINDWARD ISLANDS CARIBBEAN SEA.

THE PACIFIC TSUNAMI WARNING CENTER IN EWA BEACH HAWAII WILL ISSUE MESSAGES FOR AREAS IN THE CARIBBEAN OUTSIDE PUERTO RICO AND THE VIRGIN ISLANDS.

THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT BY THE WEST COAST/ALASKA TSUNAMI WARNING CENTER UNLESS ADDITIONAL INFORMATION BECOMES AVAILABLE. SEE THE WEB SITE WCATWC.ARH.NOAA.GOV FOR BASIC TSUNAMI INFORMATION - SAFETY RULES AND TSUNAMI TRAVEL TIMES. $$

[Red Badger]

This event has been reviewed by a seismologist.

Are super novae reviewed by cosmetologists?.....

[SevenofNine]

Al baby do you know somebody there

[DoughtyOne]

NO - REPEAT NO - WARNING OR WATCH IS IN EFFECT FOR THESE AREAS.

I don't really understand this. Quakes taking place at depth can cause displacement, upward movement on the surface. If I remember correctly, the Northridge quake was relatively deep.

It still turned out to be the largest loss earthquake in U.S. history.

[robomatik]

“its the big one!” :)

[Travis McGee]

We were there!

[Strategerist]

Direct tsunamis are caused by actual considerable movement of the sea floor. A deep quake will indeed cause movement deep below the earth, but it won’t actually change the shape of the sea floor.

You can still get smaller tsunamis from a quake causing an undersea landslide.

[gridlock]

There is no Tsunami watch. I guess they are able to determine that this earthquake could not produce a Tsunami.

[Lokibob]

Here is the seismic chart as it was recorded in Utah:

 

 

[DoughtyOne]

Northridge (19 kilometer depth)

http://www.agu.org/pubs/crossref/1995/95JB00865.shtml

I understand your comments, and I pretty much ageee. Wouldn’t you agree though that even a deep quake could potentially cause the surface to rise or even dip as a result of the quake?

It just seems rather quick to declare ‘all clear’ on this event.

Granted, I haven’t studied this like the experts have.

[DoughtyOne]

I guess so.

[Abathar]

Hey, we were just there! Didn’t know that area was prone to strong earthquakes though, poor people were still cleaning up after the last hurricane that came through when I was there.

[null and void]

Last time I saw a red square that big on the world earthquake map was 12/26.

I was still feeling glad that it wasn’t on land when the waves started hitting...

[ExSoldier]

Earthquake? Or Birthpangs of the apocalypse?

RAPTURE READY?

[In veno, veritas]

Like this one?

[NonValueAdded]

Jusr for grins ... what would be the expected tsunami size had this been not so deep? How much of the Florida coast would be scoured? Gee, as if Glo-ball Warming wasn’t enough of a threat!

[Fitzcarraldo]

Global warming causes tsunamis. /sarc

[NonValueAdded]

OMG, we're doomed!

[Red Badger]

1970....those were the days.........

[cll]

I felt it (San Juan, Puerto Rico).