Saudi Quakes Oil Drilling Activity Related?
Posted by feww on May 19, 2009
Two Quakes Strike Arabia
A Large Swarm of Earthquakes May Follow
Two quakes measuring 4.6 and 4.9 struck Saudi Arabia on Sunday and Tuesday receptively. The two seismic events may be followed by a large swarm of earthquakes in the coming days.
Moderators are watching the events with interest because the quakes are concentrated close to Harrat Lunayyir, a basaltic volcanic field located in NW Saudi Arabia with some 50 volcanic cones. According to USGS record, “Harrat Lunayyir is one of the smallest of the Holocene lava fields of Saudi Arabia,” which last erupted about 1,000 years ago.
FEWW is carefully analyzing the likelihood whether the quakes were caused by petroleum drilling activity, and will post its findings soon.
Earthquake Details:
Magnitude: 4.9
Date-Time:
- Tuesday, May 19, 2009 at 06:38:33 UTC
- Tuesday, May 19, 2009 at 09:38:33 AM at epicenter
Location: 25.105°N, 37.788°E
Depth: 10 km (6.2 miles) set by location program
Region: WESTERN SAUDI ARABIA
Distances:
- 115 km (70 miles) NNW of Yanbu` al Bahr, Saudi Arabia
- 185 km (115 miles) SE of Al Wajh, Saudi Arabia
- 195 km (120 miles) WNW of Al Madinah, Saudi Arabia
- 915 km (560 miles) W of RIYADH, Saudi Arabia
Location Uncertainty: horizontal +/- 12.6 km (7.8 miles); depth fixed by location program
Parameters: NST= 20, Nph= 20, Dmin=>999 km, Rmss=0.86 sec, Gp=155°, M-type=body wave magnitude (Mb), Version=7
Source: USGS NEIC (WDCS-D)
Event ID: us2009gvaj
Earthquake Details:
Magnitude: 4.6
Date-Time:
- Sunday, May 17, 2009 at 19:50:07 UTC
- Sunday, May 17, 2009 at 10:50:07 PM at epicenter
- Time of Earthquake in other Time Zones
Location: 25.356°N, 37.632°E
Depth: 10 km (6.2 miles) set by location program
Region WESTERN SAUDI ARABIA
Distances:
- 145 km (90 miles) NNW of Yanbu` al Bahr, Saudi Arabia
- 155 km (95 miles) SE of Al Wajh, Saudi Arabia
- 220 km (135 miles) WNW of Al Madinah, Saudi Arabia
- 930 km (570 miles) W of RIYADH, Saudi Arabia
Location Uncertainty: horizontal +/- 12 km (7.5 miles); depth fixed by location program
Parameters: NST= 21, Nph= 21, Dmin=546.8 km, Rmss=0.81 sec, Gp=144°, M-type=body wave magnitude (Mb), Version=7
Source: USGS NEIC (WDCS-D)
Event ID: us2009gtbi
Fire Earth 
FEWW Saudi Quake Swarm Forecast 100 pct Correct! « Fire Earth said
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terres said
http://www.alertnet.org/thenews/newsdesk/LJ727376.htm
Two tremors hit Saudi volcano region, no injuries
19 May 2009 18:40:41 GMT
Source: Reuters
RIYADH, May 19 (Reuters) – Two medium-size earthquakes hit a volcanic region in northwestern Saudi Arabia on Tuesday, but there were no injuries and no damage to buildings, a seismological official said.
A 5.4 earthquake hit the northwestern region in al-Ais on Tuesday, just hours after a 4.8 tremor, said Ahmad al-Attas, vice-president of the Saudi Geological Survey (SGS).
Authorities had evacuated villages on a 20-km (12-mile) radius from al-Ais volcano after a previous tremor on Sunday.
The region is 240 km away from the holy city of Medina and 150 km away from the port of Yanbu on the Red Sea. It is not close to the world’s top oil exporter’s oil and petrochemical facilities in Rabigh.
SGS President Zuhair Nawab said the region lies on a fault line, declining to comment on current magma levels, but newspapers reported that in the past few days magma levels had risen to 4 km (2.5 miles) below the surface from 8 km.
Fears of an eruption in dormant volcanoes in al-Ais sent panic stricken residents voluntarily fleeing to Medina and Yanbu last week.
Lava from al-Ais volcanoes has never spread out beyond 18 km, said Nawab, adding that the last volcanic eruption there was over 700 years ago.
The population of al-Ais, an ancient resting place for caravans travelling between the western and southern cities of the Arabian Peninsula and Syria, is estimated at around 60,000. (Reporting by Asma Alsharif; Editing by Jon Hemming; Riyadh newsroom, +966 1 463 2603, asma.alsharif.reuters.com@reuters.net)
John Burgess said
[Edited. See Editorial Policy. Moderator.]
[It’s noted that the commenter categorically disagrees with the content of this post as well as the update at https://feww.wordpress.com/2009/05/20/feww-saudi-quake-swarm-forecast-100-pct-correct/ -FEWW.]
feww said
FEWW Saudi Quake Swarm Forecast 100 pct Correct!
https://feww.wordpress.com/2009/05/20/feww-saudi-quake-swarm-forecast-100-pct-correct/