{"id":4089,"date":"2009-04-07T07:38:45","date_gmt":"2009-04-07T07:38:45","guid":{"rendered":"http:\/\/www.iiees.ac.ir\/fa\/?p=4089"},"modified":"2009-04-07T07:38:45","modified_gmt":"2009-04-07T07:38:45","slug":"vol-5-no-2-summer-2003","status":"publish","type":"post","link":"http:\/\/old.iiees.ac.ir\/fa\/vol-5-no-2-summer-2003\/","title":{"rendered":"Vol. 5, No. 2- Summer 2003"},"content":{"rendered":"<p><!--nextpage--> <\/p>\n<div style=\"text-align: center;\"><strong> Aftershock Analysis for the 1997 Ghaen-Birjand (Ardekul) Earthquake<\/strong><\/div>\n<div style=\"text-align: center;\">Amir Mansour Farahbod, Conrad Lindholm, Mohammad Mokhtari, and Hilmar Bungum<\/div>\n<div style=\"text-align: center;\"><\/div>\n<p dir=\"ltr\">In this study at the first step, the database of two temporary networks of International Institute of Earthquake Engineering and Seismology (IIEES) and Institute of Geophysics of Tehran University (IGTU), which deployed independently after the Ghaen-Birjand earthquake, were merged. Based on the new database, focal mechanisms of some larger aftershocks were obtained and crustal model of eastern Iran [3] modified for the epicentral area of Ghaen-Birjand earthquake and its aftershocks. The Vp\/Vs ratio is inferred as 1.85 for the region covered by the temporary seismic networks. After relocation of more than two hundred events, it was cleared that at least three of the largest aftershocks were estimated to be located with a precision corresponding to error ellipsoid axes within 5 to 10 km (Ground Truth level of 5 to 10).<\/p>\n<p dir=\"ltr\">\n<p style=\"text-align: center;\"><a href=\"http:\/\/old.iiees.ac.ir\/fa\/wp-content\/uploads\/2009\/04\/V5N2_Summer03_1.pdf\">Full Paper<\/a><\/p>\n<p style=\"text-align: center;\">\n<div style=\"text-align: center;\"><\/div>\n<p> <!--nextpage--> <\/p>\n<p style=\"text-align: center;\"><strong>Aftershock Analysis for the 1997 Ghaen-Birjand (Ardekul) EarthquakePeak Ground Velocity Modelling for AustralianIntraplate Earthquakes<\/strong><\/p>\n<p style=\"text-align: center;\">Nelson Lam, Cvetan Sinadinovski, Raymond Koo, and John Wilson<\/p>\n<\/p>\n<p dir=\"ltr\">Modelling the attenuation of peak ground velocity for intraplate earthquakes in Australia is faced with numerous challenges including the lack of quality instrumental earthquake data from close distances. Furthermore, the significant variation in the crustal conditions within the Australian continent means that more than one attenuation relationship is required to suit different conditions even though the entire continent is wholly within the Indo-Australasian tectonic plate. The modelling approach adopted in this study is based on a convenient separation of the source, crustal and path attenuation effects in the modelling. Each of these effects is represented by separate component factors. The accuracy of this Component Attenuation Model (CAM) was evaluated using historical Intensity data collected in Australia over the past one hundred years. It can be shown by the analysis of the residuals that CAM provides better predictions of the Intensities and peak ground velocities than a number of commonly used attenuation models. Most recorded Intensity values are in agreement with the CAM calculations within 0.5 Intensity units.<\/p>\n<p dir=\"ltr\">\n<p style=\"text-align: center;\"><a href=\"http:\/\/old.iiees.ac.ir\/fa\/wp-content\/uploads\/2009\/04\/V5N2_Summer03_2.pdf\">Full Paper<\/a><\/p>\n<p style=\"text-align: center;\">\n<div style=\"text-align: center;\"><\/div>\n<p> <!--nextpage--> <\/p>\n<p style=\"text-align: center;\"><strong>Effective Techniques for Arch Dam Ambient Vibration Test:Application on Two Iranian Dams<\/strong><br \/>Mahmoud R. Mivehchi, Mohammad T. Ahmadi and Aghil Hajmomeni<\/p>\n<\/p>\n<p dir=\"ltr\">Ambient vibration test is an effective and economical means for identification of dynamic properties of structures such as dams. Mathematical models generally are developed for the design purpose. Structural and material parameters are assumed from similar projects or limited material tests. It was found desirable to verify the results obtained from mathematical model used regularly in the Iranian dam design practice by comparing with the behavior of the actual as-built structures. Indeed this was done by dynamic tests and good correlation was found. In this paper a new combination of different techniques is employed to achieve highest possible precision using the minimum available hardware.<\/p>\n<\/p>\n<p style=\"text-align: center;\"><a href=\"http:\/\/old.iiees.ac.ir\/fa\/wp-content\/uploads\/2009\/04\/V5N2_Summer03_3.pdf\">Full Paper<\/a><\/p>\n<p style=\"text-align: center;\">\n<div style=\"text-align: center;\"><\/div>\n<p> <!--nextpage--> <\/p>\n<p style=\"text-align: center;\"><strong>On Time-Domain Two-Dimensional Site Response Analysis of Topographic Structures by BEM<\/strong><br \/>Mohsen Kamalian, Behrouz Gatmiri, and Abdollah Sohrabi Bidar<\/p>\n<\/p>\n<p dir=\"ltr\">In this paper, an advanced formulation of time-domain two-dimensional Boundary Element Method (BEM) for linear elastodynamics is used to carry out site response analysis of topographic structures subjected to incident P-, SV-, and Rayleigh waves. A modified set of well behaved full space two-dimensional elastodynamic convoluted kernels is presented and employed, that has a higher degree of accuracy than those presented by the previous researchers. Numerical results are presented, including cases of half-plane, canyon and ridge sections, subjected to the different body and surface waves.<\/p>\n<\/p>\n<p style=\"text-align: center;\"><a href=\"http:\/\/old.iiees.ac.ir\/fa\/wp-content\/uploads\/2009\/04\/V5N2_Summer03_4.pdf\">Full Paper<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Aftershock Analysis for the 1997 Ghaen-Birjand (Ardekul) Earthquake Amir Mansour Farahbod, Conrad Lindholm, Mohammad Mokhtari, and Hilmar Bungum In this study at the first step, the<span style=\"color:#28B3C7\"> \u0627\u062f\u0627\u0645\u0647 \u2026<\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39],"tags":[],"class_list":["post-4089","post","type-post","status-publish","format-standard","hentry","category-jsee"],"_links":{"self":[{"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/posts\/4089","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/comments?post=4089"}],"version-history":[{"count":0,"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/posts\/4089\/revisions"}],"wp:attachment":[{"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/media?parent=4089"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/categories?post=4089"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/tags?post=4089"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}