Magnitude 7.6 - SOLOMON ISLANDS

USGS Earthquake Hazards Program ^ | 01 Apr 07 | USGS

[GATOR NAVY]

Earthquake Details

Magnitude	7.6
Date-Time	Sunday, April 1, 2007 at 20:39:56 (UTC) = Coordinated Universal Time Monday, April 2, 2007 at 7:39:56 AM = local time at epicenter
Location	8.474°S, 156.950°E
Depth	10 km (6.2 miles) set by location program
Region		SOLOMON ISLANDS
Distances	45 km (25 miles) SSE of Gizo, New Georgia Islands, Solomon Isl. 205 km (125 miles) S of Chirovanga, Choiseul, Solomon Islands 345 km (215 miles) WNW of HONIARA, Guadalcanal, Solomon Islands 2145 km (1330 miles) NNE of BRISBANE, Queensland, Australia
Location Uncertainty	horizontal +/- 9.1 km (5.7 miles); depth fixed by location program
Parameters	Nst=148, Nph=148, Dmin=345.9 km, Rmss=1.2 sec, Gp= 32°, M-type=moment magnitude (Mw), Version=6
	Source	USGS NEIC (WDCS-D)
Event ID	us2007aqbk

• This event has been reviewed by a seismologist.

[conservative in nyc]

That only applies to the mainland. The Pacific Tsunami Warning Center issues tsunami warnings and watches for Hawaii and the rest of the Pacific.

[Strategerist]

EMSC has revised the magnitude up to 7.9 and the latest PTWC message had 8.1, and considering the "A Team" at USGS isn't there on weekends, I suspect the magnitude was higher than 7.6.

[HangnJudge]

Tsunami report Map URL

http://wcatwc.arh.noaa.gov/eventmap.html

[BIGLOOK]

7.6 ping.

Watching the news for a seismic sea wave event in the SW islands.

[yield 2 the right]

Nice one....How did you make those official looking Tsunami Bulletin and the quake location maps?

[HangnJudge]

[Strategerist]

For any WWII History Buffs this was right under New Georgia - near Munda, Vella Lavella, etc.

Fairly significant population in New Georgia, over 50,000.

[chickenNdumplings]

http://www.prh.noaa.gov/ptwc/messages.php?id=pacific.2007.04.01.213221

[yield 2 the right]

What this not a April Fools Day joke?
I am not falling for this one.
If I where in a Tsunami warning area I would dare the "tsunami" wave to prove wrong and I would win....
Repeating: I am not falling for this lame April Fools Day joke....

[HangnJudge]

Ummm

Straight off of USGS sites...
Not an April fools

[crghill]

pflr

[GATOR NAVY]

It always seems like the initial magnitude reports for large earthquakes are low.

[yield 2 the right]

I stand corrected, sorry, it is April Fools Day after all in the USA Timezones though....

[DrGunsforHands]

The Boxing Day Earthquake was initially reported as a 7.6 on the Richter Scale. They just kept moving the magnitude, along with the death toll, higher. Ended up as a 9.1. Hopefully, this won't be the case this time. And anyone know the difference between Moment and Richter magnitudes? Richter was 7.6 for this, but Moment was 8.1.

[HangnJudge]

So much stuff on the web today
hard to pick through the wheat from the chaff

[Strategerist]

The larger the earthquake the harder it is to estimate magnitude. Also most nearby seismographs get "saturated" ("pegged" if you will) by big quakes.

[Strategerist]

There are several different magnitude scales - the only one that works for really big quakes is the Moment Magnitude.

To be perfectly anal-retentive and pedantic, technically the "Richter" scale only applies to Southern California and is no longer used, thus technically it's basically misused all the time.

Good article on all the scales:

http://en.wikipedia.org/wiki/Seismic_scale

[Strategerist]

Very sparse stuff on google news so far, apparently there was no damage from the quake itself on Guadalcanal, where most of the Solomon Islands population lives.

[HangnJudge]

Link to Google map

http://maps.google.com/maps?q=-8.4739+156.9501(M7.6%20-%20SOLOMON%20ISLANDS%20-%202007%20April%201%20%2020:39:56%20UTC)&ll=-8.4739,156.9501&spn=2,2&f=d&t=h&hl=e

[GATOR NAVY]

...apparently there was no damage from the quake itself on Guadalcanal...

I've been to Guadalcanal. There's not a lot to damage, unless they've really built up in the last 20 years.