# Earthworm Modules:
HYPOINVERSE DOCUMENTATION

(last revised February 7, 2001)

A draft verion of hypoinverse documentation is available as a WORD document and a postscript file at the ftp site:

swave.wr.usgs.gov in /ftp/pub/outgoing/klein/hyp2000/docs.

### Some changes of note for Hyp2000:

1. Any format containing years is changed. The changes are simple and generally involve expanding years from 2 to 4 digits, and moving other fields to the right. The station file and shadow format had no year field and therefore was not changed. Hypoinverse summary format grows from 154 to 164 columns, hypo71 from 93 to 95, archive format from 100 to 111, and summary shadow did not change length.
2. The exception to 1) is there is no new phase format. The original phase format is still supported, but the century (1900 or 2000) is set as a global parameter for the location run.
3. All magnitudes are now to 2 decimal places in all formats
4. The user selects the 2000 formats with one command. The "200" command has 2 arguments: a) T=use 2000 formats, F=use old formats b) Century to assume for phase format, which has no century field. Thus "cop 5" will still select archive-shadow input, which is useful to those of us who struggle through earthquakes at 3 in the morning.
5. The new archive format has a field specifying a code for the units of amplitude. Presently only the traditional peak-to-peak mm (Develocorder or paper), or 0-to-peak mm (UC Berkeley) are supported. The amplitude field is expanded from F3.0 to F7.2.