Owen Ridge deep-water submarine landslides: implications for tsunami hazard along the Oman coast

Rodriguez, Mathieu; Chamot‐Rooke, Nicolas; Hébert, Hélène; Fournier, Marc; Huchon, Philippe

doi:10.5194/nhess-13-417-2013

Cited by 40 publications

(17 citation statements)

References 47 publications

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“…Transverse faults are common structures within narrow (b15-km-wide) stepover areas such as the Dead Sea Basin (Ben Avraham and ten Brink, 1989;Kashai and Croker, 1987;Lazar et al, 2006;Smit et al, 2008) or the 20°N Basin along the OFZ (Rodriguez et al, , 2013a. There, transverse faults form during the opening of the pull-apart basin and were shown to transfer strike slip motion from one main bounding strikeslip segment to the other (Ben Avraham and ten Brink, 1989).…”

Section: Mode Of Opening Of the South Dalrymple Troughmentioning

confidence: 94%

“…11. Regional correlation of seismic facies at the edges of the Dalrymple Trough, the 20°N Basin (Rodriguez et al, 2013a) and the Owen Ridge (Rodriguez et al, 2014;Shipboard Scientific Party, 1989). …”

Section: Late Miocene Murray Ridge Uplift and Buried Foldsmentioning

confidence: 99%

“…Actually, the East Oman Margin, the Owen Basin, and the Owen Ridge show compressive deformation precisely dated at 8.2-8.8 Ma at ODP Site 730 (Rodriguez et al, 2014) consistent with the age of the unconformity marking the uplift of the Southern Murray Ridge. An erosive surface at the top of the Owen Ridge, marked by large submarine failures (Rodriguez et al, 2012(Rodriguez et al, , 2013a, and dated at 8-9 Ma by ties with ODP Site 722, characterizes the younger uplift of the Owen Ridge (Rodriguez et al, 2014).…”

Section: U-unconformity and The Uplift Of The Murray Ridgementioning

confidence: 99%

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Tectonics of the Dalrymple Trough and uplift of the Murray Ridge (NW Indian Ocean)

Rodriguez¹,

Chamot‐Rooke²,

Huchon³

et al. 2014

Tectonophysics

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International audienceThe Dalrymple Trough is a 150-km-long, 30-km-wide basin located at the northern termination of the Owen Fracture Zone (OFZ), which is the present-day active India-Arabia plate boundary. The Dalrymple Trough is closely associated with the Murray Ridge, a complex of prominent bathymetric highs located on its eastern flank. Recent multibeam mapping of the connection between the Dalrymple Trough and the OFZ revealed a horsetail structure, which suggests a close relationship between geological histories of both structures. However, the 3-6 Ma age of initiation of the OFZ contrasts with the commonly accepted Early Miocene emplacement of the Dalrymple Trough. Recent seismic lines document a new tectonic history of the Dalrymple Trough, involving two major episodes of deformation along the India-Arabia plate boundary at ~ 8-10 Ma and ~ 1.9 ± 0.9 Ma. The 8-10 Ma episode is marked by a system of folds linked to the main uplift of the southern Murray Ridge and the first uplift of the northern Murray Ridge. This episode is related to a global plate reorganization event in the Late Miocene, well expressed by intraplate deformation in the Central Indian Ocean. The Dalrymple Trough opened at ~ 1.9 ± 0.9 Ma subsequently to the formation of a stepover at the India-Arabia plate boundary, coeval with the regional M-unconformity in the Oman abyssal plain, which marks a structural reorganization of the Makran accretionary wedge, and the last uplift of the northern Murray Ridge

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Section: Mode Of Opening Of the South Dalrymple Troughmentioning

confidence: 94%

Section: Late Miocene Murray Ridge Uplift and Buried Foldsmentioning

confidence: 99%

Section: U-unconformity and The Uplift Of The Murray Ridgementioning

confidence: 99%

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Tectonics of the Dalrymple Trough and uplift of the Murray Ridge (NW Indian Ocean)

Rodriguez¹,

Chamot‐Rooke²,

Huchon³

et al. 2014

Tectonophysics

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“…Therefore, it is anticipated that future tsunamis can be generated from large earthquakes along MSZ. All published articles in relation to tsunamis from the Makran fault are reviewed [1][2][3][4][5][6][7][8][9][10][11][12].…”

Section: Historical Tsunami Recordsmentioning

confidence: 99%

Tsunami hazard assessment along Diba-Oman and Diba-Al-Emirates coasts

et al. 2017

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Abstract. Tsunami is among the most devastating natural hazards phenomenon responsible for significant loss of life and property throughout history. The Sultanate of Oman and United Arab Emirates are among the Indian Ocean countries that were subjected to one confirmed tsunami in November 27, 1945 due to an Mw 8.1 earthquake in Makran Subduction Zone. In this study, we present preliminary deterministic tsunami hazard assessment for the coasts of Diba Oman and Diba AlEmirates, which are located on the western coast of the Oman Sea. The tsunami vulnerability of these cities increases due to the construction of many critical infrastructures and urban concentration along their coasts. Therefore, tsunami hazard assessment is necessary to mitigate the risk on the socio-economic system and sustainable developments. The major known source of tsunamis able to impact both coasts of Oman and United Arab Emirates is the Makran Subduction Zone (MSZ) which extends for approximately 900 km. The deterministic approach uses specific scenarios considering the maximum credible earthquakes occurring in the MSZ and computes the ensuing tsunami impact in the coasts of the study area. The maximum wave height graphs and inundation maps are obtained for tsunami scenarios caused by 8.8 earthquake magnitude in eastern MSZ and 8.2 magnitude from western MSZ. The Mw8.8 eastern MSZ causes a maximum inundation distance of 447 meters and a maximum flow depth of 1.37 meter. Maximum inundation distance larger than 420 meters occurs due to the Mw8.2 western MSZ scenario. For this scenario, numerical simulations show a maximum flow depth of about 2.34 meters.

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“…In the wake of the 1998 Sissano event, numerous studies investigated the distribution of submarine landslides along continental slopes, islands and bathymetric highs, as well as their tsunamigenic potential (Canals et al, 2004;Masson et al, 2006;McAdoo et al, 2000;Chaytor et al, 2009;Twichell et al, 2009;Mulder et al, 2009;Tappin, 2010;Iacono et al, 2014;Urgeles and Camerlenghi, 2013;Macías et al, 2015;Palomino et al, 2016;Rodriguez et al, 2012Rodriguez et al, , 2013Rodriguez et al, , 2017. Submarine landslide-generated tsunamis display specific characteristics com-5 pared to other sources (Trifunac and Todorovska, 2002;Harbitz et al, 2006Harbitz et al, , 2014.…”

mentioning

confidence: 99%

Tsunamigenic potential of a Holocene submarine landslide along the North Anatolian Fault (North Aegean Sea, off Thasos Island): insights from numerical modeling

Janin¹,

Rodriguez²,

Sakellariou³

et al. 2018

Preprint

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Abstract. The North Anatolian Fault in the northern Aegean Sea triggers frequent earthquakes of magnitude up to M w ∼ 7.This seismicity can be a source of modest tsunamis for the surrounding coastlines with less than 50 cm height according to numerical modelling and analysis of tsunami deposits. However, other tsunami sources may be involved, like submarine landslides. We assess the severity of this potential hazard by performing numerical simulations of tsunami generation and propagation from a Holocene landslide (1.85 km 3 in volume) identified off Thasos island. We use a model coupling the simu-5 lation of the submarine landslide, assimilated to a granular flow, to the propagation of the tsunami wave. The results of these simulations show that a tsunami wave of water height between 1.10 m and 1.65 m reaches the coastline at Alexandroupolis (58.000 inhabitants) one hour after the triggering of the landslide. In the same way, tsunamis waves of water height between 0.80 m and 2.00 m reach the coastline of the Athos peninsula 9 min after the triggering of the landslide. Landslide tsunamis should not be neglected as a potential source of tsunami in the area. Despite numerous earthquakes of M w > 7 and strong 10 detrital input (on the order of 30 cm.ka −1 ), only a few Holocene landslides have been recognized so far, asking the question of the relationships between seismicity and landslide frequency in the area.

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Owen Ridge deep-water submarine landslides: implications for tsunami hazard along the Oman coast

Cited by 40 publications

References 47 publications

Tectonics of the Dalrymple Trough and uplift of the Murray Ridge (NW Indian Ocean)

Tectonics of the Dalrymple Trough and uplift of the Murray Ridge (NW Indian Ocean)

Tsunami hazard assessment along Diba-Oman and Diba-Al-Emirates coasts

Tsunamigenic potential of a Holocene submarine landslide along the North Anatolian Fault (North Aegean Sea, off Thasos Island): insights from numerical modeling

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