Seismic hazard assessment for Cyprus

Cagnan, Zehra; Tanırcan, Gülüm

doi:10.1007/s10950-009-9163-1

Cited by 19 publications

(12 citation statements)

References 40 publications

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“…Subduction has now terminated in the east, where the Bitlis suture (Figure 1a) marks the collision between Arabia and eastern Anatolia, which began 45–26 Ma (Darin et al., 2018; McQuarrie & van Hinsbergen, 2013). South of the Anatolian peninsula, subduction is probably in its terminal stage, with limited evidence for Wadati‐Benioff seismicity in this area (e.g., Cagnan & Tanircan, 2010) and incipient break‐off of the African slab evidenced in mantle seismic tomographic images (Figure 1b: Delph et al., 2017; Kounoudis et al., 2020; Portner et al., 2018). This has been related to the onset of continental collision at the Cyprus trench (e.g., Delph et al., 2017; Kinnaird & Robertson, 2013; McPhee & van Hinsbergen, 2019).…”

Section: Introductionmentioning

confidence: 99%

The Influence of the North Anatolian Fault and a Fragmenting Slab Architecture on Upper Mantle Seismic Anisotropy in the Eastern Mediterranean

Merry

Bastow

Kounoudis

et al. 2021

Geochem Geophys Geosyst

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A comprehensive teleseismic shear-wave splitting dataset of 6,606 measurements is presented for the eastern Mediterranean.• Lithospheric anisotropy beneath the North Anatolian Fault is consistent with a mantle shear zone deforming coherently with the surface. 10• Asthenospheric anisotropy beneath Anatolia is dominated by relatively small-11 scale processes such as flow through slab gaps and tears.

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Section: Introductionmentioning

confidence: 99%

The Influence of the North Anatolian Fault and a Fragmenting Slab Architecture on Upper Mantle Seismic Anisotropy in the Eastern Mediterranean

Merry

Bastow

Kounoudis

et al. 2021

Geochem Geophys Geosyst

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“…Seismic tomographic models show that the trench is associated with a north-dipping high-velocity anomaly interpreted as the subducting African lithosphere, which may have undergone recent detachment to the north, and is still contiguous to the northwest of Cyprus (Biryol et al, 2011;van der Meer et al, 2018). There are few sub-crustal earthquakes associated with that anomaly below and to the north of Cyprus, meaning there is no active Benioff zone (Algermissen and Rogers, 2004;Cagnan and Tanircan, 2010), consistent with a broken slab.…”

Section: Geological Settingmentioning

confidence: 98%

Tectonic reconstruction of Cyprus reveals Late Miocene continental collision of Africa and Anatolia

McPhee

Hinsbergen

2019

Gondwana Research

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“…Below Cyprus and the Central Anatolian Plateau, subduction is at a near-terminal stage, with evidence for Wadati-Benioff seismicity completely lacking (e.g. Cagnan and Tanircan, 2010). Further west, Neotethyan oceanic lithosphere continues to subduct at the Hellenic trench, where slab rollback drives extension below the Aegean Sea and western Anatolia (e.g.…”

Section: Geological and Tectonic Historymentioning

confidence: 99%

The crustal structure of the Anatolian Plate from receiver functions and implications for the uplift of the central and eastern Anatolian plateaus

Ogden

Bastow

2021

Geophysical Journal International

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Summary Understanding the crustal structure of the Anatolian Plate has important implications for its formation and evolution, including the extent to which its high elevation is maintained isostatically. However, the numerous teleseismic receiver function studies from which Anatolian Moho depths have been obtained return results that differ by ≤21 km at some seismograph stations. To address this issue, we determine Moho depth and bulk crustal VP/VS ratio (κ) at 582 broadband seismograph stations, including ∼100 for which H-κ results have not been reported previously. We use a modified H-κ stacking method in which a final solution is selected from a suite of up to 1000 repeat H-κ measurements, each calculated using randomly-selected receiver functions and H-κ input parameters. Ten quality control criteria that variously assess the final numerical result, the receiver function data set, and the extent to which the results are clustered tightly, are used to determine station quality. By refining Moho depth constraints, including identifying 182 stations, analysed previously, where H-κ stacking yields unreliable results (particularly in Eastern Anatolia and the rapidly-uplifting Taurides), our new crustal model (ANATOLIA-HK21) provides fresh insight into Anatolian crustal structure and topography. Changes in Moho depth within the Anatolian Plate occur on a shorter length-scale than has sometimes previously been assumed. For example, crustal thickness decreases abruptly from >40 km in the northern Kirsehir block to <32 km beneath the Central Anatolian Volcanic Province and Tuz Golu basin. Moho depth increases from 30-35 km on the Arabian Plate to 35-40 km across the East Anatolian Fault into Anatolia, in support of structural geological observations that Arabia-Anatolia crustal shortening was accommodated primarily on the Anatolian, not Arabian, Plate. However, there are no consistent changes in Moho depth across the North Anatolian Fault, whose development along the Intra-Pontide and İzmir-Ankara-Erzincan suture zones was more likely the result of contrasts in mantle lithospheric, not crustal, structure. While the crust thins from ∼45 km below the uplifted Eastern Anatolian Plateau to ∼25 km below lower-lying western Anatolia, Moho depth is generally correlated poorly with elevation. Residual topography calculations confirm the requirement for a mantle contribution to Anatolian Plateau uplift, with localised asthenospheric upwellings in response to slab break-off and/or lithospheric dripping/delamination example candidate driving mechanisms.

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Seismic hazard assessment for Cyprus

Cited by 19 publications

References 40 publications

The Influence of the North Anatolian Fault and a Fragmenting Slab Architecture on Upper Mantle Seismic Anisotropy in the Eastern Mediterranean

The Influence of the North Anatolian Fault and a Fragmenting Slab Architecture on Upper Mantle Seismic Anisotropy in the Eastern Mediterranean

Tectonic reconstruction of Cyprus reveals Late Miocene continental collision of Africa and Anatolia

The crustal structure of the Anatolian Plate from receiver functions and implications for the uplift of the central and eastern Anatolian plateaus

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