Since the Last Newsletter, Our Region Has Been Devastated Chris Browitt President Foreword to the Special Section on the May 21 St , Algeria Earthquake Alert System and Real Time Seismicity Special Web Page Emsc Actions concerning the Boumerdes-zemmouri Event

نویسنده

  • Chris Browitt
چکیده

The Boumerdes-Algiers earthquake of magnitude Mw:6.8 is the second major event which seriously affected Algeria in the last twenty years. This seismic event, located 7 km north of the village of Zemmouri (50 Km east of Algiers) happened in a region characterized previously by a low to moderate seismic activity. With a depth of 10 km, the earthquake killed 2300 persons and caused huge damage in the epicentral area located between Dellys and Algiers. In this region, site effects such as liquefaction, minor landslides, rock falls, surface breaks have been observed. The earthquake was generated by an unknown offshore reverse fault, the Zemmouri fault. This NE-SW oriented fault extents over 50 km along the margin, between Dellys and Corso. Geological investigations revealed in the epicentral area, surface breaks affecting the Quaternary sedimentary cover. These breaks display two main orientations parallel to the coastline: N35° from Corso to Dellys and N120 from Corso to Tamentefoust. Along this coastline, an uplift of the seafloor with a mean value of about 60 cm has been also observed.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Damage Detection Based on Object-based Segmentation and Classification from High-resolution Satellite Images for the 2003 Boumerdes, Algeria Earthquake

A strong earthquake of magnitude 6.8 struck the Mediterranean coast of Algeria on 21 May 2003 and the city of Zemmouri in Boumerdes province was most heavily damaged. QuickBird satellite observed the Zemmouri area on 23 May 2003. By image sharpening, buildings, cars and even debris can clearly be identified in a natural colour image. Preliminarily, the present authors performed visual damage in...

متن کامل

Damage Detection for the 2003 Algeria Earthquake Using Sar Intensity Images

High-resolution remote sensing using Synthetic Aperture Radar (SAR) is one of the most promising technologies for grasping damage information of built-up areas under independence of weather condition and sun illumination. A strong earthquake occurred in the coast of Algeria on May 21, 2003. The cities of Boumerdes and Zemmouri were the most extensively damaged areas. Canadian SAR satellite, RAD...

متن کامل

A Numerical Investigation of Boumerdes-Zemmouri (Algeria) Earthquake and Tsunami

On May 21, 2003 Boumerdes-Zemmouri (Algeria) earthquake generated a small tsunami, which was recorded at several locations around the coast of Balearic Islands, Spain. Recent field studies (Meghraoui, et al., 2004) and teleseismic wave analysis (Yiga, 2003) indicated that the earthquake magnitude is stronger than that suggested by the Harvard CMT solution. Moreover, the seafloor displacement is...

متن کامل

A quantitative investigation on lung tumor site on its motion tracking in radiotherapy with external surrogates

Introduction: In external beam radiotherapy each effort is done to deliver 3D dose distribution onto the tumor volume uniformly, while minimizing the dose to healthy organs at the same time. Radiation treatment of tumors located at thorax region such as lung and liver has a challenging issue during target localization since these tumors move mainly due to respiration. There are...

متن کامل

Recurrent seismicity in Rajasthan State in the tectonically stable NW Indian Craton

Indian peninsular region comprises several Archean cratonic blocks (Dharwar, Bastar, Singhbhum, Aravalli – Bundelkhand), bordered by Proterozoic mobile belts. Therefore, this region is considered as tectonically stable and designated as the least vulnerable region to earthquake hazard except the still active Central Indian Tectonic Zone (CITZ). The latter is a major suture between southern and ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2003