...D MUKHOPADHYAY; S SENGUPTA Abstract Three phases of deformation are recognized in the Simulpal area. The regional schistosity which was hitherto regarded as the earliest deformation structure in Singhbhum is shown to be a second generation structure preceded by a phase of isoclinal folding...

...Figure 6. (a) Map and (b) west–east cross section showing the comparison between 3D NLLoc (gray circles) and 3D SimulPS (white diamonds) locations for 7 synthetic events. In the central and right graphs, the differences in the hypocentral coordinates between 3D NLLoc (black squares) and 3D...

...Figure 4. Localization with the SimulPS code using the homogeneous isotropic model ( V P = 6080 m / s and V S = 3510 m / s ). Artifacts for the deep events are observed because the initial event depth was chosen to be 5 km (see text for details). ...

... . Evans J. R. Eberhart-Phillips D. Thurber C. H. (1994) . User's manual for SIMULPS 12 for imaging Vp and Vp/Vs: A derivative of the “Thurber” tomographic...

.... Mukhopadhyay D. & Sengupta S. 1971 . Structural geometry and time relation of metamorphic recrystallisation to deformation in the Precambrian rocks near Simulpal, Eastern India . Geological Society of America Bulletin 82 , 2251 –60. Mukhopadhyay D. , Ghosh M...

... the events, thus the events can be relocated more accurately. The process is iterated until the difference between the measured and calculated traveltimes is at an acceptable level. The SIMULPS local earthquake tomography code was developed based on Thurber's damped-least squares, full matrix inversion...

... SimulPS by Evans et al. (1994) for location of earthquakes occurring in broader areas. Details on methodological aspects of Bayloc can be found in the previously quoted papers. The 2018 event offers the opportunity to explore the tectonic environment of the 1905 earthquake source with the support...

... with the uncertainty derived from the resolution of the velocity inversion result. The resolution of the model is computed using the resolution and covariance matrix computed with the SimulPS algorithm. Figure  8 shows representative V P and V S maps and associated estimation error...

... determined using HYPOINVERSE ( Klein, 2002 ) or SIMULPS ( Thurber, 1983 ), which uses a similar routine for the calculation. The vertical errors are expected to be somewhat larger than the horizontal errors, depending on the station spacing and availability of analyst‐reviewed P and S picks...

... Calabria) from the confining locked segments. Guarnieri ( 2006 ) also proposed counterclockwise rotation of the retreating subduction hinge in recent times. We used the standard Simulps code ( Evans et al. 1994 ) to invert the arrival time data for the P -wave velocity structure at the depth...

... Each data set was inverted separately for the three-dimensional V p and V p/ V s structure; the SIMULPS software ( Eberhart-Phillips, 1990 ; Thurber, 1983 ) was used. Decreasing the number of events in a tomographic study may significantly reduce resolution owing to less ray coverage...

... P 5,875 S We used the computer code simulps 14 ( Thurber, 1983 ; Eberhart-Phillips, 1990 ), extended by Haslinger and Kissling ( 2001 ) for full three-dimensional ray shooting, to invert simultaneously for hypocenter locations and three-dimensional P -wave velocity ( V P...

... type of data sets (both absolute and differential times) and inversion algorithm (tomoFDD), whereas the southern California model by Lin et al. (2007) is derived by applying the SIMULPS algorithm ( Thurber, 1983 , 1993 ; Eberhart-Phillips, 1990 ; Evans et al. , 1994 ) to absolute arrival...