P16_1984A (Marathon II) bathymetry:

Actual WHP ID will be something different. (Data sent to WHPO 3/04,being
formatted.)

ASCII navigation and bathymetry data file was obtained from 
Roland deSzoeke and Vicki Halliwell at Oregon State University.
The data were hand-digitized from the shipboard PDR records.
The depths reported use a 1500 m/sec sound velocity.
Carter corrected depths are included in the p16_1984a_bathy_gdc.dat file.

Expocode: 31WTMARAII
Chief Scientist: Roland deSzoeke
Ship:  R/V Thomas Washington
Ports: Honolulu, Hawaii to Kodiak, Alaska
Dates: May 4 - June 4, 1984

"P16_1984A_bathy.dep" is the original data, uncorrected depths, format from V. Halliwell

"P16_1984A_bathy_edited.dep" is the edited data (see below), uncorrected depths, Halliwell format

"P16_1984A_bathy_gdc.dat" is the edited data, with uncorrected and corrected
depths, GDC format

Files updated 7/31/02 LDT

-------------------------------------
Ascii format for the original data "P16_1984A_bathy.dep" and
"P16_1984A_bathy_edited.dep" 
 (called "marathon.dep" on the original data tape) (one record per line)

Number of points (xxxxx)
Month       (mm)
Day         (dd)
Time        (hhmm)
Depth       (ddddd) uncorrected meters
Zhigh
Zlow
Roll
Stn
latitude	(ddmm.mmmmm) degrees*100+minutes, "S" negative
longitude	(ddmm.mmmmm) degrees*100+minutes, "W" negative

Format of the "GDC" format file, "P16_1984A_bathy_gdc.dat" (one record per line):
lat (ddddd.mmm) "S" negative
lon (ddddd.mmm) "W" negative
dpt (dddddd.d) meters
imo (ii) month
ida (ii) day
iyr (ii) year
ihr (ii) hour
imi (ii) minute
ise (ii) second
ydat (yyyyddd.hhh) (Julian date in ytk format)

-----------------------
Comments on data (V. Halliwell, OSU)
Bathymetry hand-digitized from PDR records, assuming a 1500 M/S
sound velocity.

MARATHON.DEP      This is the Marathon bottom profile as far as we have
            completed it.
              The first record of the file is a format with which
            the following data can be read.  The 2nd record is a
            header.  The data records contain the following fields:

                1) NP - point number.  This is the number of the
                   orginal digitized point recorded by Vicki. It
                   is not neccessarily equal to the record number
                   since some points have been deleted.
                2) Date/time as: month, day-of-month, and
                   hours-minutes.
                3) Unadjusted sonic depth in meters from
                   transponder.  Roland does not trust the
                   routine we have here for adjusting depth so
                   he leaves that to you. ********************
                4) Upper limit of recording range in meters.
                5) Lower limit of recording range in meters.
                6) Roll number from which the reading was taken.
                7) Station number.  This is the number of the
                   most recent station.
                8) Estimated latitude.
                9) Estimated longitude.
----
Data quality (differences between original data and P16_1984A_bathy_corrected.dep):
Numerous blank records were removed
Corrupted lat/lon records in the original data file were repaired in
    P16_1984A_bathy.dep.

Data look good, no spikes edited out.