Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/4102
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dc.contributor.authorallDe Martini, P. M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.authorallHessami, K.; International Institute of Earthquake Engineering and Seismology, Tehran, Iranen
dc.contributor.authorallPantosti, D.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.authorallD'Addezio, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.authorallAlinaghi, H.; International Institute of Earthquake Engineering and Seismology, Tehran, Iranen
dc.contributor.authorallGhafory-Ashtiani, M.; International Institute of Earthquake Engineering and Seismology, Tehran, Iranen
dc.date.accessioned2008-10-01T13:45:51Zen
dc.date.available2008-10-01T13:45:51Zen
dc.date.issued1998-03-20en
dc.identifier.urihttp://hdl.handle.net/2122/4102en
dc.description.abstractIn this paper we present the results of preliminary geomorphic and trenching investigations along the Kahrizak fault. This fault is located south of the highly populated metropolis of Tehran and represents one of the main structures in the area containing important seismic potential. The Kahrizak fault has a very clear expression at the surface where it forms a prominent 35-km-long, 15-m-high scarp on Holocene alluvial deposits. The fault strikes N70°-80°W and dips to the north. Movement is prevalently right-lateral with the northern side of the fault up. Trench excavations exposed a sequence of weathered, massive, alluvial deposits which are dated, by means of radiometric methods, to the Holocene. In the trenches the sequence is intensely deformed by north-dipping, high- and low-angle faults within a 30-m-wide zone. On the basis of stratigraphic and structural relations, some evidence for individual Holocene earthquakes is found; however, we were not able to reconstruct the seismic history of the fault nor to evaluate the size of deformation produced by each event. Because of the possible ~10 m offset of ancient linear hydraulic artifacts (qanáts), that cross the fault, we hypothesize that the most recent event may have occurred in historical times (more recent than 5000 yr B.P.) and it may be one of those reported in this area by the current catalogues of seismicity. Based on these preliminary investigations we estimate an elapsed time between 5000 and 800 years, a maximum slip per event dmax of ~10 m, a minimum Holocene vertical slip rate of ~1 mm/yr versus a horizontal slip rate of ~3.5 mm/yr, a maximum of ~3000 years for the average recurrence time, and an expected Mw = 7.0 to 7.4. These can be considered as a first-hand reference for the activity on this fault.en
dc.language.isoEnglishen
dc.publisher.nameElsevieren
dc.relation.ispartofTectonophysicsen
dc.relation.ispartofseries1-4 / 287 (1998)en
dc.subjectIranen
dc.subjectpaleoseismicityen
dc.subjectgeomorphologyen
dc.subjectseismic hazard assessmenten
dc.titleA geologic contribution to the evaluation of the seismic potential of the Kahrizak fault (Tehran, Iran)en
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber187-199en
dc.subject.INGV04. Solid Earth::04.04. Geology::04.04.01. Earthquake geology and paleoseismologyen
dc.subject.INGV04. Solid Earth::04.04. Geology::04.04.03. Geomorphologyen
dc.relation.referencesAmbraseys, N.N., 1963. The Buyin-Zara (Iran) earthquake of September 1, 1962: a field report. Bull. Seismol. Soc. Am. 53, 705-140. Ambraseys, N.N., Melville, C.P., 1982. A History of Persian Earthquakes. Cambridge University Press, Cambridge, 219 pp. Berberian, M., 1983. The Southern Caspian: a compressional depression floored by a trapped, modified oceanic crust. Can. J. Earth Sci. 20, 163-183. Berberian, M., 1994. Natural Hazards and the First Earthquake Catalogue of Iran, Vol. I. Historical Hazards in Iran Prior to 1900. International Institute of Earthquake Engineering and Seismology (IIEES), Tehran, 603 pp. Berberian, M., King, G.C.P., 1981. Towards a paleogeography and tectonic evolution of Iran. Can. J. Earth Sci. 18, 210-265. Berberian, M., Qorashi, M., Arzhang-Ravesh, B., Mohajer-Ashjai, A., 1983. Recent tectonics, seismotectonics and earthquake- fault hazard study in the Greater Tehran region, Geol. Surv. Iran Rep. 56, 130 pp. (in Farsi). Berberian, M., Qorashi, M., Jackson, J.A., Priestley, K., Wallace, T., 1992. The Rudbar-Tarom earthquake of 20 June 1990 in NW Persia: preliminary field and seismological observations, and its tectonic significance. Bull. Seismol. Soc. Am. 82. 1726-1755. De Mets, C., Gordon, R.G., Argus, D.F., Stein, S., 1990. Current plate motions. Geophys. J. Int. 101, 425-478. Goudie, AS., 1982. Calcrete. In: Goudie, A.S., Pye, K. (Eds.), Chemical Sediments and Geomorphology, Precipitates and Residua in the Near-Surface Environment. Academic Press, London, pp. 93-131. Hanks, T.C., Kanamori, H., 1979. A moment-magnitude scale. J. Geophys. Res. 84, 2348-2350. Jackson, J.A., McKenzie, D.P., 1984. Active tectonics of the Alpine-Himalayan belt between western Turkey and Pakistan. Geophys. J.R. Astron. Soc. 77, 185-264. Jackson, J.A., Haines, J., Holt, W., 1995. The accommodation of Arabia-Eurasia plate convergence in Iran. J. Geophys. Res. 100, 15205-15219. Pedrami, M., 1981. Pasadenian Orogeny and the geology of 700,000 years ago in Iran. Internal Report Geological Survey of Iran, 355 (in Farsi). Priestley, K., Baker, C., Jackson, J.A., 1994. Implications of earthquake focal mechanism data for the active tectonics of the south Caspian Basin and surrounding regions. Geophys. J. Int. 118, 111-141. Shoja-Taheri, J., Niazi, M., 1981. Seismicity of the Iranian plateau and bordering regions. Bull. Seismol. Soc. Am. 71, 477-489. Stocklin, J., 1968. Structural history and tectonics of Iran: a review. Bull. Am. Assoc. Pet. Geol. 7, 1229-1258. Tchalenko, J.S., Iranmanesh, M.H., Mohajer-Ashjai, A., 1972. The Babol-Kenar (1971) earthquake and the seismotectonics of the Central Alborz (Iran). Ann. Geofis. 25, 27-36. Wells, D.L., Coppersmith, K.J., 1994. New empirical relationships among Magnitude, rupture length, rupture width, rupture area, and surface displacement. Bull. Seismol. Soc. Am. 84, 974- 1002.en
dc.description.obiettivoSpecifico3.2. Tettonica attivaen
dc.description.journalTypeN/A or not JCRen
dc.description.fulltextreserveden
dc.contributor.authorDe Martini, P. M.en
dc.contributor.authorHessami, K.en
dc.contributor.authorPantosti, D.en
dc.contributor.authorD'Addezio, G.en
dc.contributor.authorAlinaghi, H.en
dc.contributor.authorGhafory-Ashtiani, M.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.departmentInternational Institute of Earthquake Engineering and Seismology, Tehran, Iranen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.departmentInternational Institute of Earthquake Engineering and Seismology, Tehran, Iranen
dc.contributor.departmentInternational Institute of Earthquake Engineering and Seismology, Tehran, Iranen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia-
crisitem.author.deptInternational Institute of Earthquake Engineering and Seismology, Tehran, Iran-
crisitem.author.deptInternational Institute of Earthquake Engineering and Seismology, Teheran, Iran-
crisitem.author.orcid0000-0002-3598-5191-
crisitem.author.orcid0000-0003-4353-1146-
crisitem.author.orcid0000-0001-7308-9104-
crisitem.author.orcid0000-0003-4343-7774-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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