این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
فیزیک زمین و فضا، جلد ۴۵، شماره ۴، صفحات ۱۳۳-۱۴۲
عنوان فارسی ۲-D Surface Wave Tomography in the Northwest Part of the Iranian Plateau
چکیده فارسی مقاله In this study, we obtained two-dimensional tomography maps of the Rayleigh wave group velocity for the northwest part of the Iranian Plateau in order to investigate the structure of the crust and the uppermost mantle of NW Iran. To do this, the local earthquake data during the period 2006-2013, recorded by the 10 broadband stations of the Iranian seismic network (INSN) were used. After the preliminary correction, Rayleigh wave group velocity dispersion curves for each source-station path using the time-frequency analysis (FTAN) were estimated. Then, using a 2D-linear inversion procedure, the lateral variations in the group velocity distribution at different periods were calculated. The results are consistent with the previous studies and show major structural units in this region. Our results for the lower periods show distinct velocity anomalies along the North Tabriz Fault (NTF) and beneath the Sahand and Sabalan Volcanoes. Also, along the boundary of the Urumieh-Dokhtar Magmatic Arc (UDMA) and the Sanandaj-Sirjan metamorphic Zone (SSZ), lateral velocity changes are observed. The results for the longest period (the uppermost mantle) show low-velocity anomalies for most parts of the study area.
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی 2-D Surface Wave Tomography in the Northwest Part of the Iranian Plateau
چکیده انگلیسی مقاله In this study, we obtained two-dimensional tomography maps of the Rayleigh wave group velocity for the northwest part of the Iranian Plateau in order to investigate the structure of the crust and the uppermost mantle of NW Iran. To do this, the local earthquake data during the period 2006-2013, recorded by the 10 broadband stations of the Iranian seismic network (INSN) were used. After the preliminary correction, Rayleigh wave group velocity dispersion curves for each source-station path using the time-frequency analysis (FTAN) were estimated. Then, using a 2D-linear inversion procedure, the lateral variations in the group velocity distribution at different periods were calculated. The results are consistent with the previous studies and show major structural units in this region. Our results for the lower periods show distinct velocity anomalies along the North Tabriz Fault (NTF) and beneath the Sahand and Sabalan Volcanoes. Also, along the boundary of the Urumieh-Dokhtar Magmatic Arc (UDMA) and the Sanandaj-Sirjan metamorphic Zone (SSZ), lateral velocity changes are observed. The results for the longest period (the uppermost mantle) show low-velocity anomalies for most parts of the study area.
کلیدواژه‌های انگلیسی مقاله Tomography, Rayleigh wave, Group velocity, Dispersion curves, linear inversion
نویسندگان مقاله Hoshmand Zandi |
M.Sc. Graduated, Department of Earth Physics, Institute of Geophysics, University of Tehran, Tehran, Iran

Habib Rahimi |
Associate Professor, Department of Earth Physics, Institute of Geophysics, University of Tehran, Tehran, Iran

نشانی اینترنتی https://jesphys.ut.ac.ir/article_72939_d954b140f4692ffa1ff253cf33d6f6b3.pdf
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/1035/article-1035-2277879.pdf
کد مقاله (doi)
زبان مقاله منتشر شده fa
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات