Morphotectonic Structures along the Southwestern Margin of Lesvos Island, and Their Interrelation with the Southern Strand of the North Anatolian Fault, Aegean Sea, Greece
<p>The studied area of Lesvos Island at the eastern Aegean Sea. Its location lies at the junction of the two Aegean micro-plate boundaries, represented by the Central Hellenic Shear Zone (CHSZ) and the West Anatolian Shear Zone (WASZ) (Inset Map, modified by Ref. [<a href="#B10-geohazards-02-00023" class="html-bibr">10</a>]).</p> "> Figure 2
<p>Bathymetric map of the Lesvos southwestern margin.</p> "> Figure 3
<p>(<b>a</b>) Simplified morphological map of the Lesvos southwestern margin and topographic profiles across the major structures of the area. T1 and T2 represent the submarine terraces. WB1, WB2, and WB3 represent the three western basins. WB represents the shallow Western Basin. NM and SM represent the northern and southern margin of the Lesvos Basin. EB represents the Eastern Basin. CH represents the channel. (<b>b</b>) Three topographic profiles through the Western basin (WB, P1), the main Lesvos Basin with its northern (NM) and southern (SM) margin (P2), and the Eastern Basin (EB, P3). Or.mt: Ordymnos mt. Ol.mt: Olympus mt.</p> "> Figure 4
<p>(<b>a</b>) Morphological slope map of the studied area. (<b>b</b>) Simplified morphotectonic map of the Lesvos southwestern margin resulted from the interpretation of the morphological slope map. (<b>c</b>) Rose diagram of the zones of slope discontinuities (24 measurements).</p> "> Figure 5
<p>Panoramic views of the offshore/onshore relief along the Lesvos southwestern margin. (<b>a</b>) View from the south of the southern Lesvos margin. (<b>b</b>) View from the southeast of the NW-SE channel disrupting the eastern part of the Lesvos Basin. (<b>c</b>) View from the southwest of the Terraces T1 and T2 at the eastern Lesvos margin. (<b>d</b>) View from the southeast of the Terraces T1 and T2 at the western Lesvos margin. MF: main fault of the northern margin of the Lesvos Basin, WF: Western fault of the northern margin of the Western Basin, SEF: Southeastern fault, running south of the Eastern Basin and disrupting the T1 and T2 terraces at the eastern margin of Lesvos.</p> "> Figure 6
<p>(<b>a</b>) Morphotectonic map of Lesvos combining offshore and onshore structures. The red stars correspond to the major shock, F1, (6.3) and the two major aftershocks (5.2 and 5.0) activated during the 2017 seismic activity. Fault plane solutions of the main shock and two major aftershocks after [<a href="#B24-geohazards-02-00023" class="html-bibr">24</a>]. S: Sigri, V: Vatera, Pl: Plomari, K: Kalloni, A.P.: Aghia Paraskevi, M: Mantamado, Ke: Keramia, My: Mytilini, Le mt: Lepetymnos mt., Ol mt: Olympus mt. (<b>b</b>) Three tectonic profiles across the Western Basin (<b>A</b>), the main Lesvos Basin (<b>B</b>), and the Eastern Basin (<b>C</b>) (see also the morphological profiles in <a href="#geohazards-02-00023-f003" class="html-fig">Figure 3</a>b). WB: Western Basin, NM: northern margin of the Lesvos Basin, SM: southern margin of the Lesvos Basin, EB: Eastern Basin, SEF: southeastern fault.</p> "> Figure 7
<p>(<b>a</b>) Simplified morpho-tectonic map of the Skyros Basin and related strike-slip fault zone and the Lesvos western marginal structures, based on this study and [<a href="#B26-geohazards-02-00023" class="html-bibr">26</a>]. (<b>b</b>) Tectonic sketch of the Skyros and Lesvos structures, showing the pull-apart nature of the Lesvos western basins, WB1, WB2, and WB3, in between the Skyros and Edremit strike-slip fault zones. Sk: Skyros, Le: Lesvos, Ed: Edremit. Moment Tensor solutions: <a href="https://orfeus.gein.noa.gr/gisola/realtime/2021/" target="_blank">https://orfeus.gein.noa.gr/gisola/realtime/2021/</a> (accessed on 13 December 2021).</p> ">
Abstract
:1. Introduction
2. Materials and Methods
3. Results
3.1. Swath Bathymetry
3.2. Morphological Slope Analysis
3.3. Morphotectonic Structure
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Acknowledgments
Conflicts of Interest
References
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Nomikou, P.; Evangelidis, D.; Papanikolaou, D.; Lampridou, D.; Litsas, D.; Tsaparas, Y.; Koliopanos, I.; Petroulia, M. Morphotectonic Structures along the Southwestern Margin of Lesvos Island, and Their Interrelation with the Southern Strand of the North Anatolian Fault, Aegean Sea, Greece. GeoHazards 2021, 2, 415-429. https://doi.org/10.3390/geohazards2040023
Nomikou P, Evangelidis D, Papanikolaou D, Lampridou D, Litsas D, Tsaparas Y, Koliopanos I, Petroulia M. Morphotectonic Structures along the Southwestern Margin of Lesvos Island, and Their Interrelation with the Southern Strand of the North Anatolian Fault, Aegean Sea, Greece. GeoHazards. 2021; 2(4):415-429. https://doi.org/10.3390/geohazards2040023
Chicago/Turabian StyleNomikou, Paraskevi, Dimitris Evangelidis, Dimitrios Papanikolaou, Danai Lampridou, Dimitris Litsas, Yannis Tsaparas, Ilias Koliopanos, and Maria Petroulia. 2021. "Morphotectonic Structures along the Southwestern Margin of Lesvos Island, and Their Interrelation with the Southern Strand of the North Anatolian Fault, Aegean Sea, Greece" GeoHazards 2, no. 4: 415-429. https://doi.org/10.3390/geohazards2040023
APA StyleNomikou, P., Evangelidis, D., Papanikolaou, D., Lampridou, D., Litsas, D., Tsaparas, Y., Koliopanos, I., & Petroulia, M. (2021). Morphotectonic Structures along the Southwestern Margin of Lesvos Island, and Their Interrelation with the Southern Strand of the North Anatolian Fault, Aegean Sea, Greece. GeoHazards, 2(4), 415-429. https://doi.org/10.3390/geohazards2040023