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Ambraseys, N. N.
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Ambraseys, N. N.
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- PublicationOpen AccessThe 12th century seismic paroxysmin the Middle East: a historical perspective(2004)
; ;Ambraseys, N. N.; Department of Civil Engineering, Imperial College, London, U.K.The Dead Sea Fault and its junction with the southern segment of the East Anatolian fault zone, despite their high tectonic activity have been relatively quiescent in the last two centuries. Historical evidence, however, shows that in the 12th century these faults ruptured producing the large earthquakes of 1114, 1138, 1157 and 1170. This paroxysm occurred during one of the best-documented periods for which we have both Occidental and Arab chronicles, and shows that the activity of the 20th century, which is low, is definitely not a reliable guide to the activity over a longer period. The article is written for this Workshop Proceedings with the archaeoseismologist, and in particular with the seismophile historian in mind. It aims primarily at putting on record what is known about the seismicity of the region in the 12th century, describe the problems associated with the interpretation of macroseismic data, their limitations and misuse, and assess their completeness, rather than answer in detail questions regarding the tectonics and seismic hazard of the region, which will be dealt with elsewhere on a regional basis.496 11885 - PublicationOpen AccessSome aspects of historical research on <> earthquakes in eighteenth century Europe(1995-11)
; ; ; ;Albini, P.; Istituto di Ricerca sul Rischio Sismico,C .N.R., Milano, Italy ;Ambraseys, N. N.; Imperial College. London, U. K. ;Vogt, J.; Strasbourg, France; ; In the framework of the CEC project <> the border areas and <> repositories are presented, with special attention paid to eighteenth century Europe.150 161 - PublicationOpen AccessThe earthquake of 1 January 1837 in Southern Lebanon and N orthern Israel(1997-08)
; ;Ambraseys, N. N.; Department of Civil Engineering, Imperial College of Science, Technology and Medicine, London, U.KAll of our 20th-century information for the Levant Fracture and Dead Sea transform fault systems is for a qui- escent period in the seismicity. This is apparent when we consider earlier events which show that infi.equent earthquakes have occurred in the past along this system, an important consideration for the assessment of haz- ard and tectonics of the Middle East. One of these events was the earthquake of 1837 which caused heavy damage in Northem Israel and Southem Lebanon. This earthquake was a much larger event than earthquake catalogues indicate. We reckon it was a shallow, probably multiple event of magnitude greater than 7.0.373 4773 - PublicationOpen AccessThe state-of-the-art and practiceof long-term seismicity(2004)
; ;Ambraseys, N. N.; Department of Civil Engineering, Imperial College, London, U.K.107 149 - PublicationOpen AccessSome notes concerning prediction of ground motions for GSHAP(1993)
; ; ;Boore, D. M.; U.S. Geological Survey, Menlo Park, California, USA ;Ambraseys, N. N.; Imperial College, London, UK; 163 144 - PublicationOpen AccessHistorical evidence of faulting in Eastern Anatolia and Northern Syria(1995-09)
; ; ;Ambraseys, N. N.; Imperial College of Science, Technology and Medicine, London U.K. ;Melville, C. P.; Pembroke College, Cambrigde, U.K.; Historical data show that like the North Anatolian fault zone, which was delineated by a series of earthquakes during this century from east to west, so was the conjugate Eastern Anatolian fault zone delineated from the northeast to the southwest by a succession of large earthquakes in earlier times, with a major event at its junction with the Dead Sea fault system. This event was associated with surface faulting and occurred in a region seismically quiescent for nearly two centuries.730 473 - PublicationOpen AccessThe Kresna earthquake of 1904 in Bulgaria(2001-02)
; ;Ambraseys, N. N.; Department of Civil Engineering, Imperial College of Science, Technology and Medicine, London, U.KThe Kresna earthquake in 1904 in Bulgaria is one of the largest shallow 20th century events on land in the Balkans. This event, which was preceded by a large foreshock, has hitherto been assigned a range of magnitudes up to M S = 7.8 but the reappraisal of instrumental data yields a much smaller value of M S = 7.2 and a re-assement of the intensity distribution suggests 7.1. Thus both instrumental and macroseismic data appear consistent with a magnitude which is also compatible with the fault segmentation and local morphology of the region which cannot accommodate shallow events much larger than about 7.0. The relatively large size of the main shock suggests surface faulting but the available field evidence is insufficient to establish the dimensions, attitude andamount of dislocation, except perhaps in the vicinity of Krupnik. This downsizing of the Kresna earthquake has important consequences for tectonics and earthquake hazard estimates in the Balkans.264 1000