Mehmet Çelebi W. Durbin P. Gould W. Graham Aaron H. Johnson H. Karabinis A. Lin R.P. Maley O.W. Nuttli G. Schwalbe J. Theiss M. Walsh T. Winstead M. Cassaro 1987 application/pdf 10.3133/ofr8759 en U.S. Geological Survey, Report on recommended list of structures for seismic instrumentation in the New Madrid region reports