MAMMOTH MOUNTAIN

This directory contains earthquake locations near Mammoth Mountain based on three-dimensional velocity model and waveform data in 1989 and 1990.

Reference:

Lin, G. (2013), Seismic investigation of magmatic unrest beneath Mammoth Mountain, California using waveform cross-correlation, Geology, doi:10.1130/G34062.1.

File format description:

1989  1  8 18 36 39.900    129667 37.61980 -119.04308   1.888  1.80 4     0.327   0.651   0.006   0.006  le

year mo dy hr mn  sec   cuspid  qlat   qlon  qdep  qmag  nloc  aer_h   aer_z   rer_h   rer_z  qtype  

​where

      1989 = year

         1 = month

         8 = day

         18 = hour

        36 = minute

    39.900 = second

   129667 = NCSN cuspid (up to 9 digits)

  37.61980 = latitude

-119.04308 = longitude

     1.888 = depth (km)

      1.80 = NCSN assigned magnitude (0.0 if unassigned)

         4 = location method flag (=3 for 3D, =4 for waveform cross-correlation)

    0.327 = est. std. error (km) in absolute horz. position

     0.651 = est. std. error (km) in absolute depth

     0.006 = est. std. error (km) in horz. position relative to other events in cluster

     0.006 = est. std. error (km) in depth relative to other events in cluster

         le = NCSN flag for event type (le=local)