FN Archimer Export Format PT J TI Causes of earthquake spatial distribution beneath the Izu-Bonin-Mariana Arc BT AF KONG, Xiangchao LI, Sanzhong WANG, Yongming SUO, Yanhui DAI, Liming GELI, Louis ZHANG, Yong GUO, Lingli WANG, Pengcheng AS 1:1;2:1,2;3:1;4:1;5:1;6:1,2,3;7:1;8:1;9:1; FF 1:;2:;3:;4:;5:;6:PDG-REM-GM-LAD;7:;8:;9:; C1 Ocean Univ China, Coll Marine Geosci, Key Lab Submarine Geosci & Prospecting Tech, Minist Educ, Qingdao 266100, Peoples R China. Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266235, Peoples R China. Ifremer, Inst Carnot Ifremer EDROME, Marine Geosci Dept, BP 70, F-266235 Plouzane, France. C2 UNIV OCEAN CHINA, CHINA QNLM, CHINA IFREMER, FRANCE SI BREST SE PDG-REM-GM-LAD IN WOS Ifremer jusqu'en 2018 copubli-int-hors-europe copubli-sud IF 2.762 TC 15 UR https://archimer.ifremer.fr/doc/00407/51828/52427.pdf LA English DT Article DE ;Philippine Sea Plate;Pacific Plate;Earthquake;Seamount;Slab tear;Subduction rate AB Statistics about the occurrence frequency of earthquakes (1973-2015) at shallow, intermediate and great depths along the Izu-Bonin-Mariana (IBM) Arc is presented and a percent perturbation relative to P-wave mean value (LLNL-G3Dv3) is adopted to show the deep structure. The correlation coefficient between the subduction rate and the frequency of shallow seismic events along the IBM is 0.605, proving that the subduction rate is an important factor for shallow seismic events. The relationship between relief amplitudes of the seafloor and earthquake occurrences implies that some seamount chains riding on the Pacific seafloor may have an effect on intermediate-depth seismic events along the IBM. A probable hypothesis is proposed that the seamounts or surrounding seafloor with high degree of fracture may bring numerous hydrous minerals into the deep and may result in a different thermal structure compared to the seafloor where no seamounts are subducted. Fluids from the seamounts or surrounding seafloor are released to trigger earthquakes at intermediate-depth. Deep events in the northern and southern Mariana arc are likely affected by a horizontal propagating tear parallel to the trench. PY 2018 PD JAN SO Journal Of Asian Earth Sciences SN 1367-9120 PU Pergamon-elsevier Science Ltd VL 151 UT 000418974400008 BP 90 EP 100 DI 10.1016/j.jseaes.2017.10.015 ID 51828 ER EF