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Archive for the ‘Gas Drilling earthquake’ Category

NY Quakes Probably Gas Drilling Related

Posted by feww on May 21, 2009

New York Earthquakes may be natural gas drilling activity related

having carefully researched and reviewed the SW New York seismic history, geological details of shale gas plays in the Appalachians and other related data, Moderators and blog contributors have concluded with 75% certainty the cluster of 3 earthquakes that struck Medusa, New York, earlier this week may have been caused by shale gas drilling activity.

The mainshock, a magnitude 3.0 tremor, struck on Monday, May 18, 2009 at 00:53 UTC, about 170km northeast of Dimock, Pennsylvania, followed by two smaller aftershocks measuring 2.1 and 1.9 Mw respectively. See below for details.

PA-NY-Gas drill
NE PA Gas Exploration & Central NY Wells. Epicenter of the mainshock
is marked in red at [42.571°N, 74.112°W.] The recent earthquake cluster struck an area located about 31 km WSW of Albany NY, and 170 km northeast of Dimock, Pennsylvania. Map: Google. Image may be subject to copyright. For legend see original map.

Oil and gas res
Shale Gas Plays, Lower 48 States. Map date: March 16, 2009. EIA Data Sources: Published studies. [Click image to enlarge.]

See also: The 100 Volumetrically Largest U.S. Oil and Gas Fields [PDF 12MB]


CHK – Marcellus Shale Depth from Data and Cores –  10/16/2008 [source.] Image may be subject to copyright.

FEWW expects more seismic activity occurring in a 100-km radius area  centered at  42.07°N, 75.27ºW, about 55km North of Hancock (town), New York, an area located outside the region’s recent historic seismicity. Should this occur, the Moderators would be able to recalculate the certainty factor.

geologydotcom- marcellus-shale-depth-map
This map shows the approximate depth to the base of the Marcellus Shale. It was prepared using the map by Robert Milici and Christopher Swezey above and adding depth-to-Marcellus contours published by Wallace de Witt and others, 1993, United States Department of Energy Report: The Atlas of Major Appalachian Gas Plays.  Image and caption: Geology.com.
Image may be subject to copyright.

Earthquake details:

Event #1 – Magnitude: 3.0
Date-Time:  Monday, May 18, 2009 at 00:53:29 UTC
Location: 42.571°N, 74.112°W
Depth: 9 km (5.6 miles)
Region: NEW YORK
Distances:

  • 15 km (10 miles) N (5°) from Medusa, NY
  • 16 km (10 miles) SSW (203°) from Altamont, NY
  • 17 km (11 miles) WSW (240°) from Voorheesville, NY
  • 29 km (18 miles) WSW (250°) from Albany, NY
  • 138 km (86 miles) WNW (292°) from Springfield, MA
  • 208 km (129 miles) N (356°) from New York, NY

Source:  Lamont-Doherty Cooperative Seismographic Network (LCSN)
Event ID:  ld1023914
NY ld1023914  18 May 2009
Earthquake Location. Map Centered at 43°N, 74°W. Source: USGS? ANSS

NY ld1023914  18 May 2009 - 4

NY ld1023914  18 May 2009 - 2

Event #2 – Magnitude 2.1
Date-Time:  Monday, May 18, 2009 at 07:21:57 UTC
Location: 42.567°N, 74.109°W
Depth: 6 km (3.7 miles)
Source: Lamont-Doherty Cooperative Seismographic Network (LCSN)
Event ID:  ld1023916

Event #3 – Magnitude 1.9
Date-Time Tuesday, May 19, 2009 at 14:52:32 UTC
Location 42.575°N, 74.113°W
Depth 14 km (8.7 miles)
Source Lamont-Doherty Cooperative Seismographic Network (LCSN)
Event ID ld1023935

Related Links:

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