Date post: | 13-Jan-2016 |
Category: |
Documents |
Upload: | malcolm-johns |
View: | 212 times |
Download: | 0 times |
Observation Center of seismic and volcanic study
YEMEN REPUBLICYEMEN REPUBLICMinistry of Oil and MineralsMinistry of Oil and Minerals
الله بسمالرحيم الرحمن
Naji A. S. Husain AlhetarChief of
Geophysical department and Strong motion data analysis and [email protected]
Yemen is located in the southern west of the Arabian peninsula, situated within one of the major active tectonic plate called the Arabian plate , and closed to the well known active seismic zone of the red and Gulf f Aden.
The extension spreading center in the read sea and transform fault in the Gulf of Aden as the main impact, which reflected by epicenter locations.
INTRODUCTION
Fig)(.
Historical seismic and volcanic activity in Yemen
742-1899
The historical earthquakes have taken care by Yemen and Islamic history, they
had been observed and documented many Reviewers and references, based on the effected and damaged on lives and earth surface.
The worldwide Instrumental seismic observed events within Yemen
1900-1994
YemenThe seismic recording events during the 19 the century has been detected depend on the worldwide seismic stations.
In behalf during that time Yemen strongly effected by some destructive big and moderate events such as the Sadah event with ML=5.6 in 1956 and 13 dec. 1982 in Dhamar with ml=6,
After December 13,1982 Dhamar earthquake. Was The first time to use seismic instrument in Yemen
Red Sea
Gulf of Aden
Yemen
Dhamar
RedSea
After 13th Dec. 1982 at the Dhamar province in the (central PLATEAU), with Magnitude: 6.0 it was as the biggest event Stroked in Yemen land , it was also the first time to look and understand about instrument needs so we had been started with one MEQ-800 portable instrument for observed and detected the aftershock events. It was the first time in Yemen to use the seismic instruments.
In 1993 the National Seismological Observatory Center (NSOC) Installed the SSA-2 strong motion network. After one year i.e. on November 1994 . A short period (SP) network station installed and finally a telemetric network station installed in 1996
Dhamar
Digital-telephone
Lines stations
Telemetry
stations
Yemeni seismological networks
BB station
TWSBB station
Digital telephone lines remote and central stations
telephone lines station (remote station)
Central station (receiving & acquisition) X-pitsa, 1992 HYPOCENTER
Seiasan and x-pitsa analyzing software
HYPOCENTER
Strong motion stations
Strong motion stations
New Accelerograph network operation
The Etna is designed to send and receive communications in a variety of ways. The recorder can be connected to the PC directly from the RS-232 port via an RS-232 cable.
The Etna can also be connected to the PC via two modems.
The physical connection between the recorder and the PC is invisible within QuickTalk,
Cooperative with local & central communities for seismic code
Satellite real time seismic station & hub
TWSBB station
GFZ support two stations Yemen support one station + hub
Telemetry remote & recording stations
Field stationsRepeating stations
Central recording station
First operation time1997
SEISAN
Yemen
Saudi ArabiaOman
Gulf of Aden
Yemen
Saudi Arabia Oman
Gulf of Aden
48o42o 54o
18o
12o
Epicenters map (1995-2006)
The amount of information available about local seismicity in Yemen grew exponentially following the installation of the Yemen Seismological Network.
Site map
Preliminary seismic bulletin
PAST 24 HOURS
PAST 7 DAYS
PAST 30 DAYS
PAST 3 MONTHS
SEISMIC BULLETIN By Selecting DateEPICENTER MAP
Last Annual Seismic Bulletin
SEISMIC BULLETINSEISMIC DATA CHARTEPICENTER MAPDOWNLOAD SEISMIC BULLETIN
YEAR-2003
YEAR-2004
YEAR-2003
YEAR-2004
Site map options
Website :www.nsoc.org.ye
NO
DATETIMELOCATION
DEPTH
MAG.(Ml) YEARMON.DAYHMSLATLONG
120061302142214.8844.22123.2
220061307311212.5047.42172.8
3200613014194512.9048.55253.9
4200613017265915.0145.15122.4
SOC web site
PAST 7 DAYS EVENTS
SOC web site
Red Sea
Yemen
Saudi Arabia
Gulf of Aden
Oman
the Center location in dhamar city 80km south of The Capital Sana’a
Red Sea
Yemen
Saudi Arabia
Gulf of Aden
Oman
Thank you