Earthquakes To Watch

[Christina]

This is an curios group of earthquakes that have occured in the last two daysthis is the area of the Atlantic ocean where a large quake could cause a tsunami to head for Florida and parts of the East Coast. Time will tell if it quites down or ramps up. MAG. 5.0 2007/04/06 06:10:54 37.277 -24.607 10.0 AZORES ISLANDS REGION 4.9 2007/04/05 22:45:19 37.147 -24.535 10.0 AZORES ISLANDS REGION 4.8 2007/04/05 15:40:41 37.338 -24.577 10.0 AZORES ISLANDS REGION 6.3 2007/04/05 03:56:50 37.384 -24.618 10.0 AZORES ISLANDS REGION

 

[Christina]

Two more new quakes occured in the same area last night and this morning. It is unusal to have this many large to med quakes in a short time period.6.0 2007/04/07 07:09:26 37.360 -24.501 10.0 AZORES ISLANDS REGION 5.0 2007/04/06 15:21:40 37.295 -24.657 10.0 AZORES ISLANDS REGION

 

[Christina]

This is the list now as of 2:30PM pacific time on Sunday 4/8/07 compare with top list from 4/5/07 in thats alot for three days. Mag. Date Time Lat Lon Depth RegionMAP 5.2 2007/04/08 20:38:02 37.305 -24.524 10.0 AZORES ISLANDS MAP 5.0 2007/04/08 18:25:59 37.250 -24.205 10.0 AZORES ISLANDS MAP 5.2 2007/04/08 14:47:18 37.293 -24.526 10.0 AZORES ISLANDS MAP 4.8 2007/04/08 10:24:05 37.196 -24.622 10.0 AZORES ISLANDS MAP 6.0 2007/04/07 07:09:26 37.360 -24.501 10.0 AZORES ISLANDS MAP 5.0 2007/04/06 15:21:40 37.295 -24.657 10.0 AZORES ISLANDS MAP 5.0 2007/04/06 06:10:54 37.277 -24.607 10.0 AZORES ISLANDS MAP 4.9 2007/04/05 22:45:19 37.147 -24.535 10.0 AZORES ISLANDS MAP 4.8 2007/04/05 15:40:41 37.338 -24.577 10.0 AZORES ISLANDS MAP 4.5 2007/04/05 14:38:14 37.076 -24.629 10.0 AZORES ISLANDS MAP 4.4 2007/04/05 05:40:16 37.340 -24.576 10.0 AZORES ISLANDS MAP 4.4 2007/04/05 04:16:48 37.507 -24.785 10.0 AZORES ISLANDS MAP 4.4 2007/04/05 04:12:27 37.230 -24.653 10.0 AZORES ISLANDS MAP 6.3 2007/04/05 03:56:51 37.343 -24.613 14.0 AZORES ISLANDS --------------------------------------------------------------------------This is an curios group of earthquakes that have occured in the last three daysthis is the area of the Atlantic ocean where a large quake could cause a tsunami to head for Florida and parts of the East Coast. Time will tell if it quites down or ramps up.

 

[Christina]

Region name: Azores & Canary Islands - (longitude,latitude) = (-22.5,35.0) Azores & Canary Islands region size: 30 by 30 degrees Mega-Tsunami Threatens To Devastate U.S. CoastlineScience Daily — August 31, 2001 -- A tsunami wave higher than any in recorded history threatens to ravage the US coastline in the aftermath of a volcanic eruption in the Canary Islands, UK and US scientists will report today. Locations on both African and European Atlantic coastlines - including Britain - are also thought to be at risk. -------------------------------------------------------------------------------The new research, a collaboration between Dr. Simon Day of the Benfield Greig Hazard Research Centre at UCL and Dr. Steven Ward of the University of California, reveals the extent and size of the mega-tsunami, the consequence of a giant landslide that may be triggered by a future eruption of the Cumbre Vieja volcano. Previous research by Simon Day and colleagues predicted that a future eruption would be likely to cause a landslide on the western flank of Cumbre Vieja. A block of rock approximately twice the volume of the Isle of Man would break off, travelling into the sea at a speed of up to 350 kilometres per hour. The disintegration of the rock, this earlier study predicted, would produce a debris avalanche deposit extending 60 kilometres from the island. The energy released by the collapse would be equal to the electricity consumption of the entire United States in half a year. The new model - which provides further insights into the consequences of the collapse - predicts that the landslide would create an exceptionally large tsunami with the capability to travel great distances and reaching speeds of up to 800 kilometres per hour. Immediately after Cumbre Vieja's collapse a dome of water 900 metres high and tens of kilometres wide will form only to collapse and rebound. As the landslide continues to move underwater a series of wave crests and troughs are produced which soon develop into a tsumani 'wave train' which fuels the waves progress. After only 10 minutes, the model predicts, the tsunami will have moved a distance of almost 250 kilometres. The greatest effects are predicted to occur north, west and south of the Canaries. On the West Saharan shore waves are expected to reach heights of 100 metres from crest to trough and on the north coast of Brazil waves over 40 metres high are anticipated. Florida and the Caribbean, the final destinations in the North Atlantic to be affected by the tsunami, will have to brace themselves for receiving 50-metre high waves - higher than Nelson's column in London, some 8 to 9 hours after the landslide. Towards Europe waves heights will be smaller, but substantial tsunami waves will hit the Atlantic coasts of Britain, Spain Portugal and France. For tsunamis striking flat-lying coastline regions such as Florida, calculating the inundation distance - the extent to which water penetrates inland taking the form of fast moving floods after waves break - is crucial to assessing potential damage. Dr. Day and his colleagues estimate inundation distances in the region of several kilometres from the coast. Accurate estimates of the scale of economic loss are yet to be made but are thought to be in the multi-trillion USD range. Placing the results of the Cumbre Vieja model in its wider context, Dr Simon Day, and Post-doctoral Research Fellow at UCL, said: 'Anyone planning a holiday to the Canary Islands and the islanders themselves need not panic. Cumbre Vieja is not errupting so the short-term and medium-term risks are negligble.' Dr Day continued: ' The collapse will occur during some future eruption after days or weeks of precursory deformation and earthquakes. An effective earthquake monitoring system could provide advanced warning of a likely collapse and allow early emergency management organisations a valuable window of time in which to plan and respond.' ' Eruptions of Cumbre Vieja occur at intervals of decades to a century or so and there may be a number of eruptions before its collapse. Although the year to year probability of a collapse is therefore low, the resulting tsunami would be a major disaster with indirect effects around the world. Cumbre Vieja needs to monitored closely for any signs of impending volcanic activity and for the deformation that would precede collapse.' Note: This story has been adapted from a news release issued by University College London.