000 00595nab|a22002177a|4500
999 _c61789
_d61781
001 61789
003 MX-TxCIM
005 20200513170422.0
008 200503s2012||||xxu|||p|op||||00||0|eng|d
022 _a2169-9356 (Online)
024 8 _ahttps://doi.org/10.1029/2011JB008676
040 _aMX-TxCIM
041 _aeng
100 0 _aJin-Hyuck Choi
_912739
245 1 0 _aRupture propagation inferred from damage patterns, slip distribution, and segmentation of the 1957 MW8.1 Gobi‐Altay earthquake rupture along the Bogd fault, Mongolia
260 _aUSA :
_bWiley,
_c2012.
500 _aPeer review
520 _aA detailed analysis of the rupture patterns and slip changes along the surface rupture associated with the 1957 Gobi‐Altay earthquake (MW= 8.1) in Mongolia, which occurred along the Bogd left‐lateral strike‐slip fault, was carried out to better understand segmentation and propagation. The major surface ruptures show a simple linear pattern, whereas minor ruptures along the major ruptures, which are concentrated at rupture step overs and tip zones, show complex patterns. In the latter case, their patterns strongly resemble the geometric and kinematic characteristics of previously reported mesoscale fault damage patterns. The geomorphologic offsets show that left‐lateral slip dominated with an average displacement of 3.5 to 4.0 m, but it decreased or transferred to dip‐slip components mainly at rupture step‐overs and tip zones. Abrupt changes of rupture patterns and slip distribution indicate that the coseismic surface rupture along the Bogd fault comprises three major segments from west to east, namely, the North‐Ih, East‐Ih, and North‐Baga Bogd segments, and a highly damaged eastern tip zone. Based on the location of the epicenter, as well as the asymmetrically distributed damage structures and slips, we infer that the surface rupture propagated eastward unilaterally through several segments and reached the easternmost step‐over, which acted as a tough barrier. The rupture finally terminated, producing a highly deformed tip damage zone developed to accommodate released stress. We argue that detailed analysis of damage patterns, slip distribution, and slip transfer can help us to better understand fault segmentation and rupture propagation.
546 _aText in English
650 7 _2AGROVOC
_912740
_aEarthquakes
650 7 _2AGROVOC
_912741
_aDamage
651 7 _2AGROVOC
_912742
_aMongolia
700 0 _912743
_aKwangmin Jin
700 1 _912744
_aEnkhbayar, D.
700 1 _912745
_aDavvasambuu, B.
700 1 _912746
_aBayasgalan, B.
700 0 _912747
_aYoung-Seog Kim
773 0 _tJournal of Geophysical Research
_gv. 117, no. B12
_dUSA : Wiley, 2012.
_x2169-9356
942 _cJA
_n0
_2ddc