اثر كامل بودن اطلاعات توصيفي از زمينلرزه در تعيين شدت آن با تمركز بر زمينلرزه اردكول قائن (٢٠ ارديبهشت ١٣٧٦ )، ايران (Arabic)

Effects of completing dataset to assess the intensity value concentrating on Ardekul earthquake (10 May 1997), Iran. (English)

Earthquake descriptions documented in various reports are one of the most important datasets to assess the macroseismic intensity values of the epicenter and location affected by the earthquake and prepare different intensity maps. This information consists of building damages and environmental effects identified as macroseismic data points (MDPs). Extracting the macroseismic parameters of the earthquake will be possible using these MDPs. Moreover, each location with any information can be considered as a point of the intensity map. In this study, Ardekul Ghaen earthquake (10 May 1997) was selected to show the effect of using its different dataset reported for this earthquake to assess the intensity values and prepare the earthquake intensity map. Researchers in different fields in their reports mentioned to various descriptions of this earthquake effects consisting of descriptions on different types of building damages, descriptions on various environmental effects, and information from people who felt the earthquake. For this study, the descriptions published in different reports were collected separately for the cities and the rural areas (MDPs) affected by the earthquake. Totally, about more than 100 locations with various effects from the earthquake were reported for this earthquake. Since the descriptions of all reports were not complete and MDPs with their intensity values are the main dataset of this study, for each MDPs, the intensity values were assessed using all descriptions reported by different references. However, the intensity maps were separately prepared for each selected report using their reported MDPs. On the other hands, depending on the reported MDPs, the intensity maps of each report will be different from others. For this study, to show that the effect of completeness of the earthquake reports on estimating the results depends on their datasets, five reports were selected from different reports published. The intensity maps of this earthquake were separately plotted based on each of the selected reports. According to this study, the best report should be the one with more complete information of each MDP affected by the earthquake. It consists of all descriptions related to the building damages or the environmental effects. Thereafter, the earthquake intensity values can be assessed with more accuracy. Moreover, the intensity map of the selected earthquake will also be plotted with more details. If there are enough MDPs, the macroseismic parameters of the earthquake can be also estimated. More MDPs and complete description for each one, more accuracy and high quality estimations. [ABSTRACT FROM AUTHOR]

زمينلرزه اردكول قائن در ٢٠ ارديبهشت ١٣٧٦ بهوقوعپيوست. بزرگاي بيش از ٧ اين زمينلرزه موجب شد توجه متخصصان به آن جلب و طي گزارشهايي جنبههاي مختلف آن بررسي شود. ازجمله اطلاعاتي كه در برخي از گزار شهاي منتشرشده وجود دارد، توصيفاتي از ميزان تخريب و خسارات ساختماني و ميزان تغييرات محيطي ناشي از رخداد زمينلرزه است. در اين مطالعه، با هدف بررسي اثر كامل بودن گزارشهاي توصيفي زمينلرزهها، اطلاعات چندين گزارش شامل توصيفات منتشرشده از اين زمينلرزه، هر يك جداگانه بررسي شدند. با استناد به نتايج اين بررسي، توصي فهاي دقيق و كامل در هر گزارش زمينلرزه، از اركان اساسي برآورد دقيق و باكيفيت نتايج است؛ بنابراين توصيه م يشود متخصصان رشتههاي مختلف با درنظرگرفتن ه مزمان كليه تغييرات حاصل از رخداد زمينلرزه، ازجمله ميزان تخريب و خسارات ساختمانها ي با سازهها ي مختلف (خشت وگلي، فلزي، بتوني، چوبي و...) و ميزان تغييرات محيطي ناشي از رخداد زمينلرزه (جاب هجايي، روانگرايي، لغزش و...)، براي هريك از شهرها و روستاهاي تأثيرپذيرفته از رخداد زمينلرزه گزارشهاي جامعي تهيه كنند تا با استفاده از اين اطلاعات، علاوه بر تعيين دقيق شدت رخداد، امكان تخمين دقيقتري از پارامترهاي مهلرز هاي زمينلرزه نيز فراهم شود. [ABSTRACT FROM AUTHOR]

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