@article{MTMT:32185585, title = {Building the Himalaya from tectonic to earthquake scales}, url = {https://m2.mtmt.hu/api/publication/32185585}, author = {Dal Zilio, Luca and Hetényi, György and Hubbard, Judith and Bollinger, Laurent}, doi = {10.1038/s43017-021-00143-1}, journal-iso = {NAT REV EARTH ENVIRON}, journal = {NATURE REVIEWS EARTH & ENVIRONMENT}, volume = {2}, unique-id = {32185585}, year = {2021}, eissn = {2662-138X}, pages = {251-268}, orcid-numbers = {Dal Zilio, Luca/0000-0002-5642-0894; Hetényi, György/0000-0001-9036-4761} } @article{MTMT:3273926, title = {Seismotectonics of Bhutan: Evidence for segmentation of the Eastern Himalayas and link to foreland deformation}, url = {https://m2.mtmt.hu/api/publication/3273926}, author = {Diehl, T and Singer, J and Hetényi, György and Grujic, D and Clinton, J and Giardini, D and Kissling, E}, doi = {10.1016/j.epsl.2017.04.038}, journal-iso = {EARTH PLANET SC LETT}, journal = {EARTH AND PLANETARY SCIENCE LETTERS}, volume = {471}, unique-id = {3273926}, issn = {0012-821X}, abstract = {The instrumental record of Bhutan is characterized by a lower seismicity compared to other parts of the Himalayan arc. To understand this low activity and its impact on the seismic hazard, a seismic network was installed in Bhutan for 22 months between 2013 and 2014. Recorded seismicity, earthquake moment tensors and local earthquake tomography reveal along-strike variations in structure and crustal deformation regime. A thickened crust imaged in western Bhutan suggests lateral differences in stresses on the Main Himalayan Thrust (MHT), potentially affecting the interseismic coupling and deformation regime. Sikkim, western Bhutan and its foreland are characterized by strike-slip faulting in the Indian basement. Strain is particularly localized along a NW–SE striking mid-crustal fault zone reaching from Chungthang in northeast Sikkim to Dhubri at the northwestern edge of the Shillong Plateau in the foreland. The dextral Dhubri–Chungthang fault zone (DCF) causes segmentation of the Indian basement and the MHT between eastern Nepal and western Bhutan and connects the deformation front of the Himalaya with the Shillong Plateau by forming the western boundary of the Shillong block. The Kopili fault, the proposed eastern boundary of this block, appears to be a diffuse zone of mid-crustal seismicity in the foreland. In eastern Bhutan we image a seismogenic, flat portion of the MHT, which might be either related to a partially creeping segment or to increased background seismicity originating from the 2009 MW6.1 earthquake. In western-central Bhutan clusters of micro-earthquakes at the front of the High-Himalayas indicate the presence of a mid-crustal ramp and stress buildup on a fully coupled MHT. The area bounded by the DCF in the west and the seismogenic MHT in the east has the potential for M7–8 earthquakes in Bhutan. Similarly, the DCF has the potential to host M7 earthquakes as documented by the 2011 Sikkim and the 1930 Dhubri earthquakes, which were potentially associated with this structure. © 2017 Elsevier B.V.}, keywords = {DEFORMATION; TOMOGRAPHY; Seismology; earthquakes; Image segmentation; seismicity; faulting; Fault zone; Geophysics; Buildings; Strike-slip faults; Bhután; Main himalayan thrusts; Main Himalayan Thrust; SHILLONG PLATEAU; local earthquake tomography; Dhubri–Chungthang fault zone}, year = {2017}, eissn = {1385-013X}, pages = {54-64}, orcid-numbers = {Hetényi, György/0000-0001-9036-4761} } @article{MTMT:3163088, title = {Segmentation of the Himalayas as revealed by arc-parallel gravity anomalies}, url = {https://m2.mtmt.hu/api/publication/3163088}, author = {Hetényi, György and Cattin, R and Berthet, T and Le Moigne, N and Chophel, J and Lechmann, S and Hammer, P and Drukpa, D and Sapkota, SN and Gautier, S and Thinley, K}, doi = {10.1038/srep33866}, journal-iso = {SCI REP}, journal = {SCIENTIFIC REPORTS}, volume = {6}, unique-id = {3163088}, abstract = {Lateral variations along the Himalayan arc are suggested by an increasing number of studies and carry important information about the orogen's segmentation. Here we compile the hitherto most complete land gravity dataset in the region which enables the currently highest resolution plausible analysis. To study lateral variations in collisional structure we compute arc-parallel gravity anomalies (APaGA) by subtracting the average arc-perpendicular profile from our dataset; we compute likewise for topography (APaTA). We find no direct correlation between APaGA, APaTA and background seismicity, as suggested in oceanic subduction context. In the Himalayas APaTA mainly reflect relief and erosional effects, whereas APaGA reflect the deep structure of the orogen with clear lateral boundaries. Four segments are outlined and have disparate flexural geometry: NE India, Bhutan, Nepal &India until Dehradun, and NW India. The segment boundaries in the India plate are related to inherited structures, and the boundaries of the Shillong block are highlighted by seismic activity. We find that large earthquakes of the past millennium do not propagate across the segment boundaries defined by APaGA, therefore these seem to set limits for potential rupture of megathrust earthquakes. © The Author(s) 2016.}, year = {2016}, eissn = {2045-2322}, orcid-numbers = {Hetényi, György/0000-0001-9036-4761} } @article{MTMT:1280307, title = {Underplating in the Himalaya-Tibet Collision Zone Revealed by the Hi-CLIMB Experiment}, url = {https://m2.mtmt.hu/api/publication/1280307}, author = {Nabelek, J and Hetényi, György and Vergne, J and Sapkota, S and Kafle, B and Jiang, M and Su, HP and Chen, J and Huang, BS}, doi = {10.1126/science.1167719}, journal-iso = {SCIENCE}, journal = {SCIENCE}, volume = {325}, unique-id = {1280307}, issn = {0036-8075}, abstract = {We studied the formation of the Himalayan mountain range and the Tibetan Plateau by investigating their lithospheric structure. Using an 800-kilometer-long, densely spaced seismic array, we have constructed an image of the crust and upper mantle beneath the Himalayas and the southern Tibetan Plateau. The image reveals in a continuous fashion the Main Himalayan thrust fault as it extends from a shallow depth under Nepal to the mid-crust under southern Tibet. Indian crust can be traced to 31 degrees N. The crust/mantle interface beneath Tibet is anisotropic, indicating shearing during its formation. The dipping mantle fabric suggests that the Indian mantle is subducting in a diffuse fashion along several evolving subparallel structures.}, year = {2009}, eissn = {1095-9203}, pages = {1371-1374}, orcid-numbers = {Hetényi, György/0000-0001-9036-4761} }