On the problem of local tsunamis and possibilities of their warning

Sasorova, E. V.; Korovin, M. E.; Morozov, V. E.; Savochkin, P. V.

doi:10.1134/s0001437008050032

Cited by 7 publications

(5 citation statements)

References 1 publication

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“…In [13], for each tsunamigenic earthquake, the minimum distance from its source to the coast (MD) was determined, as was the mean over minimum dis tances (MOD), which was determined from all events occurred in this region. It was noted that 87% of the sources of tsunamigenic earthquakes in the Pacific basin are located no more than 100 km from the coast line and, for some regions (Kamchatka, Central America, and Japan-the coast of the Sea of Japan), all sources of tsunamigenic earthquakes are located within a 100 km zone.…”

Section: Discussion Of Resultsmentioning

confidence: 99%

Spatiotemporal distributions of tsunami sources and discovered periodicities

Левин

Sasorova

2014

Izv. Atmos. Ocean. Phys.

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Both spatial and spatiotemporal distributions of the sources of tsunamigenic earthquakes of tec tonic origin over the last 112 years have been analyzed. This analysis has been made using tsunami databases published by the Institute of Computational Mathematics and Mathematical Geophysics (Siberian Branch, Russian Academy of Sciences) and the National Aeronautics and Space Administration (United States), as well as earthquake catalogs published by the National Earthquake Information Center (United States). It has been found that the pronounced activation of seismic processes and an increase in the total energy of tsuna migenic earthquakes were observed at the beginning of both the 20th (1905)(1906)(1907)(1908)(1909)(1910)(1911)(1912)(1913)(1914)(1915)(1916)(1917)(1918)(1919)(1920) and 21st (2004-2011) cen turies. Studying the spatiotemporal periodicity of such events on the basis of an analysis of the two dimen sional distributions of the sources of tectonic tsunamis has made it possible to determine localized latitudinal zones with a total lack of such events (90°-75° N, 45°-90° S, and 35°-25° N) and regions with a periodic occurrence of tsunamis mainly within the middle (65°-35° N and 25°-40° S) and subequatorial (15° N-20° S) latitudes of the Northern and Southern hemispheres. The objective of this work is to analyze the spatiotem poral distributions of sources of tsunamigenic earthquakes and the effect of the periodic occurrence of such events on the basis of data taken from global tsunami catalogs.

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Section: Discussion Of Resultsmentioning

confidence: 99%

Spatiotemporal distributions of tsunami sources and discovered periodicities

Левин

Sasorova

2014

Izv. Atmos. Ocean. Phys.

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“…The focus of this paper is on near-field tsunamis that present a severe threat to coastal communities, given the short travel time. The study in Sasorova et al (2008) reveals that 87% of tsunamigenic sources are located closer than 100 km from the coast in the Pacific region. Taking into consideration these facts, an infrastructure for early detection requires stringent real-timeliness and reliability to mitigate the destructive impact of near-field tsunamis.…”

Section: Background and Methodologymentioning

confidence: 98%

A cost-effective, environmentally-aware undersea infrastructure to enhance community resilience to tsunamis

2016

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a b s t r a c tThe focus of this paper is on mitigating the impact of near-field tsunami detection on humans and the environment. We propose a hybrid network infrastructure that combines an undersea sensor network with fiber optic cable for cost effective, timely, and reliable near-field tsunami detection. We first formulate a cost minimization problem for near-field tsunami detection. To capture important characteristics of the environment, the optimization model incorporates into its formalization important sea environment factors and a realistic acoustic propagation model. A heuristic approach is developed to derive a nearoptimal solution to the original cost minimization problem. To demonstrate the viability of the proposed model, a case study, focused on Padang City is used, and a comparative analysis of different network configurations, using different design parameters and cost scenarios is performed. Three different cost functions, namely linear, power-law, and logarithmic, are used in the analysis. The results show that the heuristic computes efficient network configurations when a solution exists, for the linear, logarithmic, and power-law cost functions. However, further assessment should be made on the results to anticipate a local maximum that may exist in the cost function.

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“…In near-field conditions the operative efficiency of a tsunami warning system depends on the times needed for seismic signal communication, t S , and for evacuation, t E . 32 Therefore, the next relation should be realized:…”

Section: Minimizing Early Warning Timementioning

confidence: 99%

Near-field tsunami early warning and emergency planning in the Mediterranean Sea

Papadopoulos

Fokaefs

2013

Res Geophys

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The new European project <em>Near-field Tsunami Early Warning and Emergency Planning in the Mediterranean Sea</em> (NEARTOWARN) faces the need to develop operational tsunami early warning systems in near-field (local) conditions where the travel time of the first tsunami wave is very short, that is less than 30 min, which is a typical case in the North East Atlantic and the Mediterranean Sea region but also elsewhere around the globe. The operational condition that should be fulfilled is that the time of tsunami detection, plus the time of warning transmitting, plus the time of evacuation should not exceed the travel time of the first tsunami wave from its source to the closest evacuation zone. To this goal the time to detect of the causative earthquake should be compressed at the very minimum. In this context the core of the proposed system is a network of seismic early warning devices, which activate and send alert in a few seconds after the generation of a near-field earthquake, when a seismic ground motion exceeding a prescribed threshold is detected. Then civil protection mobilizes to manage the earthquake crisis but also to detect and manage a possible tsunami through a geographical risk management system. For the tsunami detection the system is supported by tide-gauges of radar type, a database of presimulated tsunami scenarios, and a local tsunami decision matrix. The island of Rhodes in the eastern termination of the Hellenic Arc and Trench has been selected for a pilot and operational development of the local tsunami warning system given that the island is a highly popular tourist destination, historically it was hit by large tsunamigenic earthquakes and was recently the master test-site for the pan-European FP6 tsunami research project <em>Tsunami Risk ANd Strategies For the European Region</em> (TRANSFER).

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On the problem of local tsunamis and possibilities of their warning

Cited by 7 publications

References 1 publication

Spatiotemporal distributions of tsunami sources and discovered periodicities

Spatiotemporal distributions of tsunami sources and discovered periodicities

A cost-effective, environmentally-aware undersea infrastructure to enhance community resilience to tsunamis

Near-field tsunami early warning and emergency planning in the Mediterranean Sea

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