Showing posts with label Vanuatu. Show all posts
Showing posts with label Vanuatu. Show all posts

Saturday, September 3, 2011

STRONG 7.0 magnitude earthquake hit VANUATU - No Tsunami Expected


http://wcatwc.arh.noaa.gov/2011/09/03/lqyyck/01/messagelqyyck-01.htm
A strong earthquake has occurred, but a tsunami IS NOT expected along the California, Oregon, Washington, British Columbia, or Alaska coast. NO tsunami warning, watch or advisory is in effect for these areas.


Based on the depth of the earthquake within the earth, a tsunami IS NOT expected along the California, Oregon, Washington, British Columbia, and Alaska coasts.

At 3:56 PM Pacific Daylight Time on September 3, an earthquake with preliminary magnitude 7.0 occurred near the Vanuatu Islands at 136km depth. (Refer to the United States Geological Survey for official earthquake parameters.)

Pacific coastal regions outside California, Oregon, Washington, British Columbia, and Alaska should refer to the Pacific Tsunami Warning Center messages for information on the event.

This will be the only statement issued for this event by the West Coast/Alaska Tsunami Warning Center unless conditions warrant. See the WCATWC web site for basic tsunami information, safety rules, and a tsunami travel time map and table. (NOTE: Travel time maps and tables indicate forecasted times only, not that a wave was generated.)


Monday, October 19, 2009

AustralianNetworkNews.com | Ash and fumes pour from Vanuatu Gaua volcano - Alert Level 2

Gaua (also known as Santa Maria Island) is the largest of the Banks Islands in Torba Province of northern Vanuatu. It covers 342 km². It has rugged terrain, reaching up to Mount Gharat (797 m), the peak of the active stratovolcano at the center of the island. The most recent eruption was in 1982. The island was evacuated for four months in 1974 due to volcanic activity. The volcano has a 6 x 9 km caldera, within which lies a crater lake known as Lake Letas, the largest lake in Vanuatu. To the east of the lake is Siri Waterfall (120 m drop).

The Gaua volcano in far northern Vanuatu is on alert level 2.

Tue, 20 Oct 2009 19:03:02 GMT-0500 - The level was raised from one last week after a geo-hazard team confirmed an increase in seismic activity and sulphur gas.

Vanuatu's Department of Geology says the Mount Garet volcano is going through an eruptive phase that began on September 27.

It is recommended not to approach the volcano, especially within 10 kilometres.

Vanuatu citizens have been advised that rivers flowing down from the volcano may be hazardous because of potential mud-slides.

Residents are reporting ash is still falling on to their crops and the smell of sulphur is strong.

Volcanologist Philipson Bani travelled to the volcano to take measurements of sulphur dioxide.

He says that from a previous gas reading of nil, sulphur dioxide measured on October 3 was 3,000 tonnes - "so for this small volcano this is huge".

Two moderate earthquakes hit the South Pacific in quick succession on Monday.

A 5.3 magnitude tremor hit 285 kilometres from Santo, in Vanuatu at 0735 GMT, the US Geological Survey said.

It was followed minutes later by a 5.5 magnitude quake 214 kilometres from Apia, in Samoa.
Related:

Gaua Island, Torba Province, Vanuatu

14.27 S, 167.50 E,
summit elevation 979 m
Shield Volcano

Gaua is a large shield volcano with gentle outer slopes, a large caldera lake (Lake Letas), and summit cinder cone (Mt Garet). The caldera is 8 x 6 km in diameter. Lake Letas occupies half the caldera with an area of 19.7 sq km. It is about 100 m deep and flat bottomed. There is warm, sulphur stained water near Mt Garet cone.

Gaua Island lies just north of the Santa Maria Fracture Zone, which runs perpendicular to the north New Hebrides Trench.


Wednesday, October 7, 2009

7.3 magnitude quake hits 330 km (205 miles) NW of Luganville, Espiritu Santo, Vanuatu - Thursday, October 08, 2009 at 09:18:43 AM at epicenter


List of Quakes on this map


MAG UTC DATE-TIME
y/m/d h:m:s
LAT
deg
LON
deg
DEPTH
km
Region
MAP 7.3 2009/10/07 22:18:43 -13.684 164.709 35.0 VANUATU REGION
MAP 7.8 2009/10/07 22:03:15 -13.052 166.187 35.0 VANUATU
MAP 4.9 2009/10/07 05:08:56 -13.615 165.942 35.0 VANUATU
MAP 4.6 2009/10/05 17:03:29 -18.776 169.223 250.2 VANUATU
MAP 5.4 2009/10/01 20:55:44 -12.291 166.430 85.5 SANTA CRUZ ISLANDS