Refine your search
Collections
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Catherine, J. K.
- Differential Uplift between Hyderabad and Bangalore Geotectonic Blocks of Eastern Dharwar Craton, South India
Abstract Views :140 |
PDF Views:99
Authors
Affiliations
1 National Geophysical Research Institute, Uppal Road, Hyderabad-500 007, IN
1 National Geophysical Research Institute, Uppal Road, Hyderabad-500 007, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 65, No 4 (2005), Pagination: 493-496Abstract
No Abstract.Full Text
- The Mw 7.5 2009 Coco Earthquake, North Andaman Region
Abstract Views :147 |
PDF Views:0
Authors
Affiliations
1 National Geophysical Research Institute, Council of Scientific and Industrial Research, Hyderabad - 500 007, IN
1 National Geophysical Research Institute, Council of Scientific and Industrial Research, Hyderabad - 500 007, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 77, No 3 (2011), Pagination: 243-251Abstract
The recent 10 August 2009 Coco earthquake (Mw 7.5), the largest aftershock of the giant 2004 Sumatra Andaman earthquake, occurred within the subducting India plate under the Burma plate. The Coco earthquake nucleated near the northwestern edge of the 2004 Sumatra-Andaman earthquake rupture under the unruptured updip segment of the plate boundary interface. The earthquake with predominant normal motion on approximately north-south to northeastsouthwest oriented plane is very similar to the 27 June 2008 Little Andaman earthquake which occurred in the South Andaman region near the trench. We provide the only available estimate of coseismic offset due to the 2009 Coco earthquake at a survey-mode GPS site in the north Andaman, located about 60 km south of the Coco earthquake epicentre. The not so large coseismic displacement of about 2 cm in the ESE direction is consistent with the earthquake focal mechanism and its magnitude. We suggest that, like the 2008 Little Andaman earthquake, this earthquake too occurred on one of the approximately north-south to northeast-southwest oriented steep planes of the obliquely subducting 90°E ridge which was reactivated in normal motion after subduction, under the favourable influence of coseismic and ongoing postseismic deformation due to the 2004 Sumatra-Andaman earthquake. Another notable feature of this earthquake is its relatively low aftershock productivity. We suggest that the earthquake occurred very close to the aseismic region of the Irrawaddy frontal arc of very low seismicity where pre-existing faults are not so critically stressed and because of which the earthquake could trigger only a few aftershocks in its immediate vicinity.Keywords
2004 Sumatra Andaman Earthquake, Andaman-Sumatra Subduction Zone, GPS Measurements, 90°E Ridge.
- Seamount Subduction and Rupture Characteristics of the March 11, 2011, Tohoku Earthquake
Abstract Views :167 |
PDF Views:0
Authors
Affiliations
1 National Geophysical Research Institute (CSIR), Uppal Road, Hyderabad - 500 007, IN
1 National Geophysical Research Institute (CSIR), Uppal Road, Hyderabad - 500 007, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 79, No 3 (2012), Pagination: 245-251Abstract
We suggest that the spatial location of the 2011 Tohoku earthquake rupture and slip distribution on it was strongly influenced by the subduction of seamount chains. Subduction of seamounts across the Japan trench caused weak coupling on the plate interface which acted as barriers to the 2011 Tohoku earthquake rupture and thus delimited it.Keywords
Tohoku Earthquake, Seamounts, Coupling, Japan Trench.References
- BILEK, S.L., SCHWARTZ, S.Y. and DESHON, H.R. (2003) Control of seafloor roughness on earthquake rupture behavior, Geology, v.31(5), pp.455-458.
- CARDOZO, N. and ALLMENDINGER, R.W. (2008) SSPX: A program to compute strain from displacement / velocity data Comput. Geosci., v.35, pp.1343-1357.
- CLOOS, M. (1992) Thrust-type subduction zone earthquakes and seamount asperities: a physical model for seismic rupture, Geology, v.20, pp.601-604.
- CLOOS, M. and SHREVE, R.L. (1996) Shear zone thickness and the seismicity of Chilean- and Marianas-type subduction zones, Geology, v.24, pp.100-107.
- COLLOT, J.-Y. et al. (2004) Are rupture zone limits of great subduction earthquakes controlled by upper plate structures? Evidence from multichannel seismic reflection data acquired across the northern Ecuador–southwest Colombia margin, Jour. Geophys. Res., v.109, B11103 doi:10.1029/2004JB003060.
- CUMMINS, P.R., BABA, T., KODAIRA, S. and KANEDA, Y. (2002) The 1946 Nankai earthquake and segmentation of the Nankai Trough, Phys. Earth Planet. Inter., v.132, pp.75-87.
- DAS, S. and WATTS, A.B. (2009) Effect of subducting seafloor topography on the rupture characteristics of great subduction zone earthquakes. In: S. Lallemand and F. Funiciello (Eds.), Subduction Zone Geodynamics, doi: 10.1007/978-3-540-87974-9, Springer-Verlag, pp.103-118.
- GAHALAUT, V. K., SUBRAHMANYAM, C., KUNDU, B., CATHERINE, J.K. and AMBIKAPATHY, A. (2010) Slow rupture in Andaman during 2004 Sumatra–Andaman earthquake: A possible consequence of subduction of 90° E ridge. Geophys. Jour. Int., v.180, pp.1181-1186.
- HASHIMOTO, C., NODA. A., SAGIYA, T. and MATSU’URA, M. (2009) Interplate seismogenic zones along the Kuril-Japan trench inferred from GPS data inversion. Nature Geoscience, v.2, pp.141-144.
- HUSEN, S., KISSLING, E. and QUINTERO, R. (2002) Tomographic evidence for a subducted seamount beneath the Gulf of Nicoya, Costa Rica: the cause of the 1990 Mw = 7.0 Gulf of Nicoya earthquake. Geophys. Res. Lett., v.29(8), 1238, doi:10.1029/2001GL014045.
- ISOZAKI, Y., AOKI, K., NAKAMA, T. and YANAI, S. (2010) New insight into a subduction-related orogen: A reappraisal of the geotectonic framework and evolution of the Japanese Islands. Gondwana Res., v.18, pp.82-105.
- KANEKO, Y., AVOUAC, J-P. and LAPUSTA, N. (2011) Towards inferring earthquake patterns from geodetic observations of interseismic coupling. Nature Geoscience, v.3, pp.363-369.
- KELLEHER, J. and MCCANN, W. (1976) Buoyant zones, great earthquakes, and unstable boundaries of subduction. Jour. Geophys. Res., v.81, pp.4885-4896.
- KODAIRA, S., TAKAHASHI, N., NAKANISHI, A., MIURA, S. and KANEDA, Y. (2002) Subducted seamount imaged in the rupture zone of the 1946 Nankaido earthquake. Sciences, v.289, pp.104-106.
- MARUYAMA, S., MASAGO, H., KATAYAMA, I., IWASE, Y., TORIUMI, M., OMORI, S. and AOKI, K. (2010) A new perspective on metamorphism and metamorphic belts. Gondwana Res., v.18, pp.106-137.
- MAZZOTTI, S., LE PICHON, X. and HENRY, P. (2000) Full interseismic locking of the Nankai and Japan-west Kurile subduction zones: An analysis of uniform elastic strain accumulation in Japan constrained by permanent GPS. Jour. Geophys. Res., v..105, pp.13159-13177.
- MINOURA, K., IMAMURA, F., SUGAWARA, D., KONO, Y. and IWASHITA, T. (2001). Jour. Natural Disaster Sci., v.23, pp.83.
- MILLER, M.S., GORBATOV, A. and KENNET, B.L.N. (2006) Threedimensional visualization of a near-vertical slab tear beneath the southern Mariana arc. Geochem. Geophys. Geosys., v.7, No.6, Q06012, doi: 10.1029/2005GC001110.
- MOGI, K. (1969) Relationship between the occurrence of great earthquakes and tectonic structures. Bull. Earthquake Res. Inst., v.47, pp.429-451.
- MOCHIZUKI, K., YAMADA, T., SHINOHARA, M., YAMANAKA, Y. and KANAZAWA, T. (2008) Weak interplate coupling by seamounts and repeating M~7 earthquakes. Science, v.321, pp.1194-1197.
- NEWMAN, A. (2011) Hidden depths. Nature, v.474, pp.441-443.
- NISHIMURA, T. et al. (2004) Temporal change of interplate coupling in northeast Japan during 1995-2002 estimated fromcontinuous GPS observations. Geophys. Jour. Internat., v.57, pp.901-916.
- NISHIZAWA, A., KANEDA, K., WATANABE, N. and OIKAWA, M. (2009) Seismic structure of the subducting seamounts on the trench axis: Erimo Seamount and Daiichi-Kashima Seamount, northern and southern ends of Japan Trench. Earth Planets Space, v.61, pp.e5-e8.
- OZAWA, S., et al. (2011) Coseismic and postseismic slip of the 2011 magnitude-9 Tohoku-Oki earthquake. Nature, pp.1-5, doi: 10.1038/nature10227.
- ROSENBAUM, G. and MO, W. (2010) Tectonic and magmatic response to the subduction of high bathymetric relief. Gondwana Res., v.19, pp.571-582. doi:10.1016/j.gr.2010.10.007.
- SAFONOVA, I. YU., UTSUNOMIYA, A., KOJIMA, S., NAKAE, S., TOMURTOGOO, O., FILIPOV, A.N. and KOIZUMI, K. (2009) Pacific superplume-related oceanic basalts hosted by accretionary complexes of Central Asia, Russian Far East and Japan. Gondwana Res., v.16, pp.587-608.
- SAGIYA, T., MIYAZAKI, S. and TADA, T. (2000) Continuous GPS array and present-day crustal deformation of Japan. Pure Appl. Geophys., v.157, pp.2303-2322.
- SCHOLZ, C.H. and SMALL, C. (1997) The effect of seamount subduction on seismic coupling. Geology, v.25, pp.487-490.
- SIMONS, M., et al. (2011) The 2011 magnitude 9.0 Tohoku-Oki Earthquake: Mosaicking the megathrust from seconds to centuries. Science, v.17, pp.1421-1425.
- SHEN, Z.K., JACKSON, D.D. and GE, B.X. (1996) Crustal deformation across and beyond the Los Angeles basic from geodetic measurements. Jour. Geophys. Res., v.101, pp.27957-27980.
- TAKIGAMI, Y., KANEOKA, I., ISHII, T. and NAKAMURA, Y. (1989) 40Ar-39Ar ages of igneous rocks recovered from Daiichi-Kashima and Erimo Seamounts during the KAIKO Project, Palaeo-geograp. Palaeoclimatol. Palaeoeco., v.71, pp.71-81.
- UTSU, T. (1999) Seismicity Studies: A Comprehensive Review [in Japanese] (Univ. of Tokyo Press).
- VOGT, P.R., LOWRIE, A., BRACEY, D.R. and HEY, R.N. (1976) Subduction of aseismic oceanic ridges: Effects on shape, seismicity, and other characteristics of consuming plate boundaries. Geol. Soc. Am. Spec. Paper, v.172, 59p.