Yelles-Chaouche Abdel Karim, Lammali Kamel, Bellik Amar, Bougrine Amina, Mahsas Abdel Hakim, Bacha Wahab, Terki Toufik, Meliani Othmane, Ouzzani Fares, Lakehal Yacine, Ait Amir Ahcene, Khellaf Kamel, Khentar Sid Ahmed, Chouiref Abdelkader, Bendekan Abdelhamid, Calais Eric
Centre de Recherche en Astronomie, Astrophysique et Géophysique (CRAAG), Bouzareah, Algiers, Algeria.
Ecole normale supérieure, Dept. of Geosciences, Université PSL, Paris, France.
Heliyon. 2019 Apr 10;5(4):e01435. doi: 10.1016/j.heliyon.2019.e01435. eCollection 2019 Apr.
The REGAT () geodetic network is composed of 53 continuously-recording GPS stations distributed in the Algerian Atlas. It spans the whole width of the Algerian coast and reaches 300 km inland, with inter-sites distance of about 100 km. One additional site is located in Tamanrasset in the southernmost part of the country. The network, whose oldest stations started operating in 2007, encompasses the main active tectonic features of the most seismically active segment of the Nubia-Eurasia plate boundary in the Western Mediterranean. Here we describe the network configuration, the data collection and analysis strategy, as well as some preliminary results on horizontal GPS velocities. A detailed analysis of the velocity field in terms of plate boundary kinematics is the topic of a separate publication. The REGAT network fills an important gap in our knowledge of present-day plate boundary deformation in the Western Mediterranean. It will soon be enhanced by an additional 100 sites in order to improve deformation monitoring with a higher spatial resolution for a better assessment of the regional seismic hazard.
REGAT大地测量网络由分布在阿尔及利亚阿特拉斯山脉的53个连续记录GPS站组成。它覆盖了阿尔及利亚海岸的整个宽度，并向内陆延伸300公里，站点间距约为100公里。另外一个站点位于该国最南端的塔曼拉塞特。该网络最古老的站点于2007年开始运行，涵盖了西地中海努比亚 - 欧亚板块边界最地震活跃段的主要活动构造特征。在此，我们描述了网络配置、数据收集和分析策略，以及一些关于水平GPS速度的初步结果。从板块边界运动学角度对速度场进行详细分析是另一篇单独出版物的主题。REGAT网络填补了我们对西地中海现今板块边界变形认识的一个重要空白。为了以更高的空间分辨率改善变形监测以更好地评估区域地震危险性，它很快将增加100个站点进行扩充。
