Forward modelling of Bouguer gravity anomaly
Mr Abhash Kumar <[email protected]>
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Hi All, I recently determined the Nazca slab geometry between 10 degree to 18 degree south in Peru using local earthquake data. I found some evidence of slab steepening between 11 degree to 14 degree south at nearly 100km depth. This result is different than all earlier results of expected flat slab at 100km depth in that region (Cahill and Isacks, 1992; Hayes et al., 2012). I was wondering if the slab is steep as opposed to flat then it should be noticeable in the bouguer gravity profile. I have the bouguer anomaly grid file from the Department of Mining, Peru. In order to do a course forward modelling of the observed bouguer anomaly, I need to filter the data. I would be extremely grateful if anyone can advice me about the frequency range to filter to the data to see the long wavelength effects of the slab. Is there any GMT command to do the filtering of gravity data. With regards Abhash kumar PHD candidate University of North Carolina at Chapel Hill To unsubscribe, send the message "signoff gmt-help" to [email protected]