Modelling and inversion of single-ended refraction data from the shot gathers of multifold deep seismic reflection profiling-an approach for deriving the shallow velocity structure

Details Modelling and inversion of single-ended refraction data from the shot gathers of multifold deep seismic reflection profiling-an approach for deriving the shallow velocity structure Modelling and inversion of single-ended refraction data from the shot gathers of multifold deep seismic reflection profiling-an approach for deriving the shallow velocity structure

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007geoji.169..507v&link_type=abstract

Geophysical Journal International, Volume 169, Issue 2, pp. 507-514.

Astronomy and Astrophysics

Astronomy

1

Basement Configuration, Marwar Basin, Multifold Deep Seismic Reflection Profiling, Shallow Velocity Structure, Single-Ended Refraction Data, Traveltime Inversion

Scientific paper

A multifold crustal-scale deep seismic near-vertical reflection profile generates a large number of single-ended shot gathers, which provide redundant data sets because of overlapping coverage of the shallow refractors. We present an approach for deriving the shallow velocity structure by modelling and inversion of single-ended seismic refraction first arrival traveltime data. We apply this method to a data set acquired with a 12-km long spread with 100 m spacing of shots and receivers, of the Neoproterozoic Marwar basin in the NW Indian shield. The approach is shown to be quite successful for delineating the shallow refractor depths, steep dips and velocities, even in the absence of regular reverse refraction profiles. The study reveals two-layered sedimentary formations, Malani volcanics and a complicated basement configuration of the Marwar basin, and provides a measure of resolution and uncertainty of the estimated model parameters. A seismic section of the near-trace gather is found to be qualitatively consistent with the derived structural features of the basin. The relative highs and lows, observed in the Bouguer gravity profile, further corroborate the derived velocity model. The present approach can be especially useful in offshore areas and elsewhere, where the single-ended multifold seismic profiles are the only available data sets.

Affiliated with

Also associated with

No associations

Rating

Modelling and inversion of single-ended refraction data from the shot gathers of multifold deep seismic reflection profiling-an approach for deriving the shallow velocity structure does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Modelling and inversion of single-ended refraction data from the shot gathers of multifold deep seismic reflection profiling-an approach for deriving the shallow velocity structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modelling and inversion of single-ended refraction data from the shot gathers of multifold deep seismic reflection profiling-an approach for deriving the shallow velocity structure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-767755