Magnitude 6.4 - OFFSHORE BIO-BIO, CHILE

[Shiloh]

Source: http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usc0003wdc.php

Magnitude 6.4 - OFFSHORE BIO-BIO, CHILE
2011 June 01 12:55:21 UTC

Earthquake Details

* This event has been reviewed by a seismologist.

Magnitude 6.4
Date-Time

* Wednesday, June 01, 2011 at 12:55:21 UTC
* Wednesday, June 01, 2011 at 08:55:21 AM at epicenter
* Time of Earthquake in other Time Zones

Location 37.545?S, 73.663?W
Depth 15.1 km (9.4 miles)
Region OFFSHORE BIO-BIO, CHILE
Distances 7 km (4 miles) N of Lebu, Bio-Bio, Chile
96 km (59 miles) SW of Concepcion, Bio-Bio, Chile
116 km (72 miles) W of Los Angeles, Bio-Bio, Chile
530 km (329 miles) SSW of SANTIAGO, Region Metropolitana, Chile
Location Uncertainty horizontal +/- 18.8 km (11.7 miles); depth +/- 4.6 km (2.9 miles)
Parameters NST=260, Nph=262, Dmin=445.3 km, Rmss=1.57 sec, Gp= 40?,
M-type=regional moment magnitude (Mw), Version=8
Source

* USGS NEIC (WDCS-D)

Event ID usc0003wdc

 

[Tonka]

Re: Magnitude 6.4 - OFFSHORE BIO-BIO, CHILE

http://www.latercera.com/noticia/na...stran-en-el-biobio-en-menos-de-una-hora.shtml
Spanish to English translation

Earthquakes measuring 6.1 and 5.2 degrees recorded in the Bio Bio in less than an hour
The epicenter of the first movement was located 138 kilometers west of Lebu, while the second was a 41 km. in the same direction.
by La Tercera - 01/06/2011 - 10:40

RELATED
Check the report from the University of Chile
Check the details of magnitudes according to Onemi
Two earthquakes, the first of 6.1 degrees on the Richter scale and the second, 5.2 on the Richter scale, occurred in the B?o B?o Region, according to the report of the Seismological Service of the University of Chile.

According to the agency, at 8.54 hours there was the first quake, whose epicenter was located 138 kilometers west of Lebu and came to 8.3 miles deep. Meanwhile, according to the National Emergency Office (Onemi), the earthquake measured intensities between II and IV degrees on the Mercalli scale.

The quake also was felt in the regions of Maule, Bio Bio, La Araucania and Los Rios.

At 09.47 hours felt another earthquake of magnitude 5.2 degrees on the Richter scale. Its epicenter was located 38 kilometers west of Lebu and 41 kilometers deep. It was also felt in the regions of Maule, B?o B?o and La Araucan?a, with intensities of between II and IV degrees on the Mercalli scale.

There were no reported injuries to people, disruption to basic services and infrastructure resulting from these earthquakes, according to the emergency agency.

The Shoah, meanwhile, reported that earthquakes do not generate tsunami hazard along the coast of Chile.

 

[Tonka]

Re: Magnitude 6.4 - OFFSHORE BIO-BIO, CHILE

http://www.terra.cl/actualidad/index.cfm?id_cat=302&id_reg=1662764Spanish to English translation

Expert warns earthquakes today are replicas of the 27-F and have not completed
June 1, 2011 ? 16:28

SANTIAGO .- After two earthquake s recorded in the south central region of the country today, the race director of the Geology of the Universidad Andr?s Bello, Maria Jesus Bravo, said the tremors were aftershocks of the earthquake of February 27, which are far from over.
The expert noted that the epicenters of the earthquake s were located in the same area of rupture of 27-F, which ranges from Pichilemu to the Arauco Peninsula.
He adds: "In Chile we will always have tremors, as the sliding of the Nazca plate beneath the South American generates constant movements of different magnitudes."
Also, Bravo explains why many people did not feel the first movement, which reached a magnitude of 6.2 Richter . For the expert, this is closely related to the depth where the epicenter is located, ie its hypocenter (point inside the Earth where it causes an earthquake ).
As an example, added the expert, our earthquake s magnitude 5 occur between 45 and 10 kilometers deep, which makes the energy release comes in a "softer" to the surface, since as it will go a long way dissipates. In contrast, in a quake like Lorca (Spain)-which occurred just a mile deep-the energy released had little way to go to reach the surface, causing the effects we all saw.