caa a22 4500 463172205 CHVBK 20180406164816.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s10950-007-9055-1 doi (NATIONALLICENCE)springer-10.1007/s10950-007-9055-1 Seismic microzonation of Dehradun City using geophysical and geotechnical characteristics in the upper 30m of soil column [Elektronische Daten] [A. Mahajan, Siefko Slob, Rajiv Ranjan, Rob Sporry, P. Champati ray, Cees van Westen] The understanding of geotechnical characteristics of near-surface material is of fundamental interest in seismic microzonation. Shear wave velocity (Vs), one of the most important soil properties for soil response modeling, has been evaluated through seismic profiling using the multichannel analysis of surface waves in the city of Dehradun situated along the foothills of northwest Himalaya. Fifty sites in the city have been investigated with survey lines between 72 and 96m in length. Multiple 1-D and interpolated 2-D profiles have been generated up to a depth of 30-40m. The Vs were used in the SHAKE2000 software in combination with seismic input motion of the recent Chamoli earthquake to obtain site response and amplification spectra. The estimated Vs are higher in the northern part of the study area (i.e., 200-700m/s from the surface to a depth of about 30m) as compared to the south and southwestern parts of the city (i.e., 180-400m/s for the same depth range). The response spectra suggest that spectral acceleration values for two-story structures are three to eight times higher than peak ground acceleration at bedrock. The analysis also suggests peak amplification at 3-4, 2-2.5, and 1-1.5Hz in the northern, central, and south-southwestern parts of the city, respectively. The spatial distributions of Vs and spectral accelerations provide valuable information for the seismic microzonation in different parts of the urban area of Dehradun. Springer Science+Business Media B.V., 2007 Seismic microzonation nationallicence Shear wave velocity (Vs) nationallicence Spectral acceleration nationallicence Response spectrum nationallicence Multichannel analysis of surface waves (MASW) nationallicence SHAKE2000 nationallicence Northwest Himalaya nationallicence Mahajan A. Wadia Institute of Himalayan Geology, 33 GMS Road, Dehradun, India aut Slob Siefko International Institute for Geo-information Science and Earth Observation (ITC), 7500 AA, Enschede, The Netherlands aut Ranjan Rajiv RMSI, Sector 16, A-7, Noida, India aut Sporry Rob International Institute for Geo-information Science and Earth Observation (ITC), 7500 AA, Enschede, The Netherlands aut Champati ray P. Indian Institute of Remote Sensing, 4-Kalidas Road, Dehradun, India aut van Westen Cees International Institute for Geo-information Science and Earth Observation (ITC), 7500 AA, Enschede, The Netherlands aut Journal of Seismology Springer Netherlands 11/4(2007-10-01), 355-370 1383-4649 11:4<355 2007 11 10950 https://doi.org/10.1007/s10950-007-9055-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10950-007-9055-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mahajan A. Wadia Institute of Himalayan Geology, 33 GMS Road, Dehradun, India aut NATIONALLICENCE 700 1- Slob Siefko International Institute for Geo-information Science and Earth Observation (ITC), 7500 AA, Enschede, The Netherlands aut NATIONALLICENCE 700 1- Ranjan Rajiv RMSI, Sector 16, A-7, Noida, India aut NATIONALLICENCE 700 1- Sporry Rob International Institute for Geo-information Science and Earth Observation (ITC), 7500 AA, Enschede, The Netherlands aut NATIONALLICENCE 700 1- Champati ray P. Indian Institute of Remote Sensing, 4-Kalidas Road, Dehradun, India aut NATIONALLICENCE 700 1- van Westen Cees International Institute for Geo-information Science and Earth Observation (ITC), 7500 AA, Enschede, The Netherlands aut NATIONALLICENCE 773 0- Journal of Seismology Springer Netherlands 11/4(2007-10-01), 355-370 1383-4649 11:4<355 2007 11 10950 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer