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Posts Tagged ‘Oregon quake’

M4.5 Quake Strikes NE Edmond Oil and Gas Field, Oklahoma

Posted by feww on December 8, 2013

Significant Earthquake Strikes 11km ENE of Edmond, Oklahoma

A magnitude 4.5Mw earthquake struck within NE Edmond Oil and Gas Field at a shallow depth of 5km, at 18:10 UTC2 on December 07, 2013. The quake was followed by a small cluster of aftershocks, with the largest two measuring 3.1Mw, as of posting.

Earthquake Details

Magnitude: 4.5Mw
Event Time: 2013-12-07 18:10:23 UTC
Location: 35.680°N, 97.355°W
Depth: 5.0km (3.1mi)
Nearby Cities:

  • 11km (7mi) ENE of Edmond, Oklahoma
  • 21km (13mi) NNW of Choctaw, Oklahoma
  • 23km (14mi) SSE of Guthrie, Oklahoma
  • 25km (16mi) N of Midwest City, Oklahoma
  • 27km (17mi) NNE of Oklahoma City, Oklahoma

Source: USGS/EHP

Latest Oklahoma Earthquakes

  1. M3.1 8km N of Spencer, Oklahoma 2013-12-08 15:27:33 UTC+09:00 5.0 km
  2. M3.1 7km E of The Village, Oklahoma 2013-12-08 08:58:19 UTC+09:00 8.9 km
  3. M2.8 6km SE of Edmond, Oklahoma 2013-12-08 04:26:29 UTC+09:00 5.0 km
  4. M4.5 11km ENE of Edmond, Oklahoma 2013-12-08 03:10:23 UTC+09:00 5.0 km

Oklahoma Quakes - 8dec2013 - 4
Earthquake Location Map. Source: USGS/EHP

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41 Earthquakes Strike Oklahoma in November

Posted by feww on December 1, 2013

A large cluster of small but shallow quakes rattles Oklahoma City in November

At least 41 earthquakes measuring 2.5Mw or greater struck the state of Oklahoma in November 2013, according to data provided by USGS/EHP.

The largest shock in the cluster (No. 11 on the table below) measured 3.8Mw, striking at a depth of 5.9km on November 11, 2013 some 5km WNW of Jones, Oklahoma.

  • The average depth of the November quakes was 5.3km.

Oklahoma Quakes - Nov 2013
Map of earthquakes in Oklahoma – Nov 2013. Source: USGS/EHP. Map Enhanced by FIRE-EARTH Blog.

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List of Oklahoma Earthquakes measuring 2.5Mw or greater, November 2013.

ok quakes nov2013-s

The following information is mirrored from USGS Site.

Tectonic Summary

Earthquakes in the Stable Continental Region

Natural Occurring Earthquake Activity

Most of North America east of the Rocky Mountains has infrequent earthquakes. Here and there earthquakes are more numerous, for example in the New Madrid seismic zone centered on southeastern Missouri, in the Charlevoix-Kamouraska seismic zone of eastern Quebec, in New England, in the New York – Philadelphia – Wilmington urban corridor, and elsewhere. However, most of the enormous region from the Rockies to the Atlantic can go years without an earthquake large enough to be felt, and several U.S. states have never reported a damaging earthquake. […]

Induced Seismicity

As is the case elsewhere in the world, there is evidence that some central and eastern North America earthquakes have been triggered or caused by human activities that have altered the stress conditions in earth’s crust sufficiently to induce faulting. Activities that have induced felt earthquakes in some geologic environments have included

  • Impoundment of water behind dams,
  • Injection of fluid into the earth’s crust,
  • Extraction of fluid or gas, and
  • Removal of rock in mining or quarrying operations.

In much of eastern and central North America, the number of earthquakes suspected of having been induced is much smaller than the number of natural earthquakes, but in some regions, such as the south-central states of the U.S., a significant majority of recent earthquakes are thought by many seismologists to have been human-induced.  […]

Latest Significant Quakes  (US and Global)

M5.5 – 221km W of Brookings, Oregon 2013-12-01 03:19:37 UTC
Location: 41.652°N 126.891°W depth=10.0km (6.2mi)
Nearby Cities:
+ 246km (153mi) WNW of McKinleyville, California
+ 481km (299mi) SW of Salem, Oregon

M6.4 – Kepulauan Barat Daya, Indonesia 2013-12-01 01:24:13 UTC
Location: 7.014°S 128.376°E depth=10.0km (6.2mi)
Nearby Cities:
+ 340km (211mi) WNW of Saumlaki, Indonesia
+ 353km (219mi) ENE of Dili, East Timor

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