Selected contributions from the 6th Spanish Conference on Coastal Geomorphology, 7–9 September 2011, Tarragona, Spain: an introduction     

Isabel Montoya Montes  Maria J. Sánchez García  Inmaculada Rodríguez Santalla 《Geo-Marine Letters》2013,33(2-3):95-99

This special issue of Geo-Marine Letters presents selected contributions from the 6th Spanish Conference on Coastal Geomorphology held from 7–9 September 2011 in Tarragona, Spain. The guest editors are Isabel Montoya Montes, Maria J. Sánchez García and Inmaculada Rodríguez Santalla. These conferences on coastal geomorphology are held biannually and serve as a discussion forum focusing mainly on advances in knowledge about the dynamics of the Spanish littoral environment, although contributions from other coastal regions are encouraged. The papers presented in this Special Issue provide a selective view of the latest research results, the main topics dealing with recent coastal morphodynamics and longer-scale coastal evolution. The 7th Conference will be held in July 2013 in Oviedo, Spain, organized by the Department of Geology at the University of Oviedo.  相似文献   

Understanding acquisition and processing error in microseismic data: An example from Pouce Coupe Field,Canada     

Matthew Bray  Isabel White 《Geophysical Prospecting》2020,68(3):815-829

A challenge in microseismic monitoring is quantification of survey acquisition and processing errors, and how these errors jointly affect estimated locations. Quantifying acquisition and processing errors and uncertainty has multiple benefits, such as more accurate and precise estimation of locations, anisotropy, moment tensor inversion and, potentially, allowing for detection of 4D reservoir changes. Here, we quantify uncertainty due to acquisition, receiver orientation error, and hodogram analysis. Additionally, we illustrate the effects of signal to noise ratio variances upon event detection. We apply processing steps to a downhole microseismic dataset from Pouce Coupe, Alberta, Canada. We use a probabilistic location approach to identify the optimal bottom well location based upon known source locations. Probability density functions are utilized to quantify uncertainty and propagate it through processing, including in source location inversion to describe the three-dimensional event location likelihood. Event locations are calculated and an amplitude stacking approach is used to reduce the error associated with first break picking and the minimization with modelled travel times. Changes in the early processing steps have allowed for understanding of location uncertainty of the mapped microseismic events.  相似文献