<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div><span>good day,<br><br>I am currently working with some sac waveforms, wishing to locate the events in order to futher carry out inversions but I am faced with the following problems:<br><br><br>- I have succeeded to pick the p and s phases in some of the data files<br><br>but can't for others. could I be helped with the p and s phases of the accompanying attached sac data files.<br><br><br>- could I also be helped with some basic lecture notes on phase identification and picking.<br><br><br>- how can I instrument gain of these sac files in particular and any other sac file I come across in general?<br><br><br>- how do know if the have the same instrument response?<br><br><br>- what is the procedure to choose the appropriate filter windows to use for a specific data type? what tips are available?<br><br><br>I will be
grateful for your help!<br><br>Eric.</span></div><div> <span></span></div><div>---------------------------------------------------<br><font color="#8000ff">NDIKUM ERIC NDOH,<br>C/O C.M.F.I. YAOUNDE,<br>P.O. Box 6090,<br>CAMEROON,<br></font><font color="#8000ff">WEST AFRICA .<br><br></font></div> <div><span style="color: rgb(0, 128, 255);"></span></div> <div><font color="#8000ff">TEL:(237) 75 17 91 66<br><img src="http://us.i1.yimg.com/us.yimg.com/i/mesg/tsmileys2/40.gif"><br> </font></div> <div><br></div></div></body></html>