scholarly journals Geological evidence of tsunamis and earthquakes at the Eastern Hellenic Arc: correlation with historical seismicity in the eastern Mediterranean Sea

2012 ◽  
Vol 2 (2) ◽  
pp. 12 ◽  
Author(s):  
Gerassimos Papadopoulos ◽  
Koji Minoura ◽  
Fumihiko Imamura ◽  
Ugur Kuran ◽  
Ahmet Yalçiner ◽  
...  
Keyword(s):  
Eastern Mediterranean ◽  
Historical Seismicity ◽  
Sand Layer ◽  
Tsunami Generation ◽  
Western Turkey ◽  
Geological Evidence ◽  
Hellenic Arc ◽  
Eastern Mediterranean Basin ◽  
Layer I ◽  
Large Earthquakes

Sedimentary stratigraphy determined by trenching in Dalaman, south-western Turkey, revealed three sand layers at a distance of approximately 240 m from the shoreline and at elevations of +0.30, +0.55 and +0.90 cm. Storm surge action does not explain the features of these deposits that show instead typical characteristics of tsunami deposition. The sand layers correlate with historical tsunamis generated by large earthquakes which ruptured the eastern Hellenic Arc and Trench in 1303, 1481 and 1741. Accelerator mass spectrometry <sup>14</sup>C dating of a wood sample from layer II indicated deposition in AD 1473±46, which fits the 1481 event. From an estimated average alluvium deposition rate of approximately 0.13 cm/year, layers I and III were dated at 1322 and 1724, which may represent the large 1303 and 1741 tsunamis. The geological record of the 1303 key event is very poor; therefore, sand layer I perhaps represents an important geological signature of the 1303 tsunami. However, the strong tsunami reported to have been generated by the 1609 earthquake is missing from Dalaman stratigraphy: this underlines the sensitivity of tsunami geological signatures to various local factors. The 1303 earthquake ruptured the trench between the islands of Crete and Rhodes. For the earthquakes of 1481, 1609 and 1741 we suggested that they were very likely generated in the Rhodes Abyssal Plain where sea depths of up to approximately 4200 m, together with the thrust component of seismotectonics, favor tsunami generation. Sand dykes directed upwards from layer I to layer II indicated that the 1481 earthquake triggered liquefaction of sand layer I. The results substantially widen our knowledge about the historical earthquake and tsunami activity in the eastern Mediterranean basin.

scholarly journals Tsunami hazards in the Eastern Mediterranean: strong earthquakes and tsunamis in the East Hellenic Arc and Trench system

2007 ◽  
Vol 7 (1) ◽  
pp. 57-64 ◽  
Author(s):  
G. A. Papadopoulos ◽  
E. Daskalaki ◽  
A. Fokaefs ◽  
N. Giraleas
Keyword(s):  
Hazard Assessment ◽  
Eastern Mediterranean ◽  
Tsunami Hazard ◽  
Field Observations ◽  
Strong Earthquakes ◽  
Hellenic Arc ◽  
Tsunami Hazard Assessment ◽  
Abstract Data ◽  
The Mean ◽  
Large Earthquakes

Abstract. Data on tsunami phenomena occurring in the East Hellenic Arc and Trench system (HA-T) from antiquity up to the present have been updated, critically evaluated and compiled in the standard GITEC format developed in the last decade for the New European Tsunami Catalogue. New field observations are presented for the tsunamis of 9 February 1948 and 24 March 2002. From the 18 tsunamis reported eight are rather well-documented while another nine remain doubtful. The mean recurrence of strong tsunamis is likely equal to about 142 years. Most of the tsunamis documented are caused by strong earthquakes occurring in the area offshore Rhodes to the east or northeast of the island. However, there are large earthquakes near Rhodes that do not cause tsunamis, like the 1926 and 1957 ones, which is of particular importance for the tsunami hazard assessment.

Sensitivity analysis of CDOM spectral slope in artificial and natural samples: an application in the central eastern Mediterranean Basin

2010 ◽  
Vol 72 (4) ◽  
pp. 485-498 ◽  
Author(s):  
Luca Bracchini ◽  
Antonio Tognazzi ◽  
Arduino Massimo Dattilo ◽  
Franco Decembrini ◽  
Claudio Rossi ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Mediterranean Basin ◽  
Eastern Mediterranean ◽  
Spectral Slope ◽  
Eastern Mediterranean Basin ◽  
Central Eastern

scholarly journals Rheological profiles in the Central- Eastern Mediterranean

1997 ◽  
Vol 40 (4) ◽  
Author(s):  
M. Viti ◽  
D. Albarello ◽  
E. Mantovani
Keyword(s):  
Heat Flow ◽  
Large Scale ◽  
Eastern Mediterranean ◽  
Mediterranean Area ◽  
Geological Time ◽  
Western Turkey ◽  
Geological Time Scale ◽  
Total Strength ◽  
The Mediterranean ◽  
Wet Rocks

Seismological investigations have provided an estimate of the gross structnral features of the crust/upper mantle system in the Mediterranean area. However, this information is only representative of the short-term me- chanical behaviour of rocks and cannot help us to understand slow deformations and related tectonic processes on the geological time scale. In this work strength envelopes for several major structural provinces of the Mediterranean area have been tentatively derived from seismological stratification and heat flow data, on the assumption of constant and uniforrn strain rate (10-16 S-1), wet rocks and conductive geotherm. It is also shown how the uncertainties in the reconstruction of thermal profiles can influence the main rheological prop- erties of the lithosphere, as thickness and total strength. The thickest (50-70 km) and strongest mechanical lithospheres correspond to the coldest zones (with heat flow lower than or equal to 50 mW m-2), i.e., the Io- nian and Levantine mesozoic basins, the Adriatic and Eurasian foreland zones and NW Greece. Heat flows larger than 65 mW m-2, generally observed in extensional zones (Tyrrhenian, Sicily Channel, Northern Aegean, Macedonia and Western Turkey), are mostly related to mechanical lithospheres thinner than 20 km. The characteristics of strength envelopes, and in particular the presence of soft layers in the crust, suggest a reasonable interpretation of some large-scale features which characterize the tectonic evolution of the Central- Eastem Mediterranean.

scholarly journals Israel's Trade Alliances Strategy: Enjoying the Best of All Worlds

2021 ◽  
Vol 4 (2) ◽  
pp. 23
Author(s):  
Nellie Munin
Keyword(s):  
European Union ◽  
Mediterranean Basin ◽  
Eastern Mediterranean ◽  
Economic Benefits ◽  
The European Union ◽  
Trade Relations ◽  
Eastern Mediterranean Basin ◽  
Trade Partner

This article revisits Israel's trade and political alliance with the European Union – its major trade partner. The article examines the position calling to water down Israel-EU trade relations, considering EU's insistence on linking economic benefits with political advancement in the region, insights gained by the COVID-19 pandemic and substantial recent regional developments: Israel's trade diversification policy, the conclusion of Abraham Accords and the discovery of gas in the Eastern Mediterranean basin. Concluding that such a strategy may not serve the parties' interests best, the article explores ways to leverage these developments to further enhance EU-Israel partnership.

scholarly journals HYPERSPECTRAL REMOTE SENSING ROLE IN ENHANCING CROP MAPPING: A COMPARISON BETWEEN DIFFERENT SUPERVISED SEGMENTATION ALGORITHMS

2019 ◽  
Vol 1 (1) ◽  
pp. 25-37
Author(s):  
Mohamad M. Awad
Keyword(s):  
Remote Sensing ◽  
Eastern Mediterranean ◽  
Hyperspectral Data ◽  
Spectral Angle Mapper ◽  
New Approach ◽  
Spectral Signatures ◽  
Agriculture Sector ◽  
Supervised Segmentation ◽  
Eastern Mediterranean Basin ◽  
Crop Mapping

In agriculture sector there is need for cheap, fast, and accurate data and technologies to help decision makers to find solutions for many agricultural problems. Many solutions depend significantly on the accuracy and efficiency of the crop mapping and crop yield estimation processes. High resolution spectral remote sensing can improve substantially crop mapping by reducing similarities between different crop types which has similar ecological conditions. This paper presents a new approach of combining a new tool, hyperspectral images and technologies to enhance crop mapping.  The tool includes spectral signatures database for the major crops in the Eastern Mediterranean Basin and other important metadata and processing functions. To prove the efficiency of the new approach, major crops such as “winter wheat” and “spring potato” are mapped using the spectral signatures database in the new tool, three different supervised algorithms, and CHRIS-Proba hyperspectral satellite images. The evaluation of the results showed that deploying different hyperspectral data and technologies can improve crop mapping. The improvements can be noticed with the increase of the accuracy to more than 86% with the use of the supervised algorithm Spectral Angle Mapper (SAM).

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