Characterizing the active tectonics in the Oran region (Algeria) and recasting the 1790 earthquake

2018 ◽  
Vol 22 (6) ◽  
pp. 1549-1561 ◽  
Author(s):  
Imene Meriem Benbakhti ◽  
Said Maouche ◽  
Djelloul Belhai ◽  
Assia Harbi ◽  
Jean-François Ritz ◽  
...  
Keyword(s):  
2016 ◽  
Author(s):  
Claudio Berti ◽  
◽  
Yang Gao ◽  
James H. Carrigan ◽  
David Anastasio

Geosciences ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 102
Author(s):  
Paraskevi Nomikou ◽  
Dimitris Evangelidis ◽  
Dimitrios Papanikolaou ◽  
Danai Lampridou ◽  
Dimitris Litsas ◽  
...  

On 30 October 2020, a strong earthquake of magnitude 7.0 occurred north of Samos Island at the Eastern Aegean Sea, whose earthquake mechanism corresponds to an E-W normal fault dipping to the north. During the aftershock period in December 2020, a hydrographic survey off the northern coastal margin of Samos Island was conducted onboard R/V NAFTILOS. The result was a detailed bathymetric map with 15 m grid interval and 50 m isobaths and a morphological slope map. The morphotectonic analysis showed the E-W fault zone running along the coastal zone with 30–50° of slope, forming a half-graben structure. Numerous landslides and canyons trending N-S, transversal to the main direction of the Samos coastline, are observed between 600 and 100 m water depth. The ENE-WSW oriented western Samos coastline forms the SE margin of the neighboring deeper Ikaria Basin. A hummocky relief was detected at the eastern margin of Samos Basin probably representing volcanic rocks. The active tectonics characterized by N-S extension is very different from the Neogene tectonics of Samos Island characterized by NE-SW compression. The mainshock and most of the aftershocks of the October 2020 seismic activity occur on the prolongation of the north dipping E-W fault zone at about 12 km depth.


Geosciences ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 321
Author(s):  
Miltiadis Polidorou ◽  
Niki Evelpidou ◽  
Theodora Tsourou ◽  
Hara Drinia ◽  
Ferréol Salomon ◽  
...  

Akrotiri Salt Lake is located 5 km west of the city of Lemesos in the southernmost part of the island of Cyprus. The evolution of the Akrotiri Salt Lake is of great scientific interest, occurring during the Holocene when eustatic and isostatic movements combined with local active tectonics and climate change developed a unique geomorphological environment. The Salt Lake today is a closed lagoon, which is depicted in Venetian maps as being connected to the sea, provides evidence of the geological setting and landscape evolution of the area. In this study, for the first time, we investigated the development of the Akrotiri Salt Lake through a series of three cores which penetrated the Holocene sediment sequence. Sedimentological and micropaleontological analyses, as well as geochronological studies were performed on the deposited sediments, identifying the complexity of the evolution of the Salt Lake and the progressive change of the area from a maritime space to an open bay and finally to a closed salt lake.


2021 ◽  
Author(s):  
D. Sakellariou ◽  
G. Rousakis ◽  
P. Drakopoulou ◽  
K. Tsampouraki-Kraounaki ◽  
I. Morfis ◽  
...  

2021 ◽  
Vol 14 (13) ◽  
Author(s):  
Umair Ali ◽  
Syed Ahmad Ali ◽  
Maqbool Yousuf ◽  
Qazi Akhter Rasool ◽  
Mukeem Ahmad ◽  
...  

2021 ◽  
pp. 229047
Author(s):  
Ching-Hui Tsai ◽  
Shu-Kun Hsu ◽  
Song-Chuen Chen ◽  
Shiou-Ya Wang ◽  
Lien-Kai Lin ◽  
...  

2017 ◽  
Vol 719-720 ◽  
pp. 4-16 ◽  
Author(s):  
R.R. Castro ◽  
J.M. Stock ◽  
E. Hauksson ◽  
R.W. Clayton

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