P17E_P19S bathymetry: ASCII navigation and bathymetry data file was obtained from Frank Delahoyde from ODF on 9/27/98. Data were hand-digitized from Raytheon PDR records. Depths in the ODF file are Carter corrected, based on the original PDR output which had a 1500 m/sec sound speed. Expocode: 316N138_10 Chief Scientist: James Swift Ship: R/V Knorr Ports: Papeete, Tahiti to Punta Arenas, Chile Dates: 1992.12.04 - 1993.01.22 "P17E_P19S.nav" is the original data, ODF format "P17E_P19S_edited.nav" is the edited data, ODF format "P17E_P19S_bathy_gdc.dat" is the edited data, including uncorrected and corrected depths, GDC format Files updated 7/31/02 LDT ------------------------------------- Ascii Navigation format for the original data "P17E_P19S.nav" and "P17E_P19S_edited.nav" (one record per line) GMT Julian date (yyddd) GMT time (hhmm) speed (xx.x) knots course (xxx.x) degrees latitude (ddmm.mmm) degrees*100+minutes, "S" negative longitude (ddmm.mmm) degrees*100+minutes, "W" negative depth (dddd) meters Format of the "GDC" format file, "P17E_P19S_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 (Delahoyde, 4/15/02): Juno2 bathymetry was hand-digitized from Raytheon PDR records. The depths were then Carter-corrected, assuming a 1500 M/S sound velocity Clarification 8/7/02: indeed the reported depths are Carter corrected ----------------------- Comments on data quality: corrections made to original file - records removed in P17E_P19S_edited.nav and P17E_P19S_bathy_gdc.dat Looks like some kind of regular interference in records line numbers 41500 to 62400 in nav file No changes made Corrupted record 93020 2358 11.8 22.2 -56.00905 -76.96393 0 -154461-4121 11.6 22.4 -56.00618 -76.96185 93021 0 11.7 22.4 -56.00297 -76.95958 0 Corrupted record 93021 2358 14.2 136.5 -53.17773 -73.35152 0 -154460-4121 14.7 137.6 -53.18082 -73.34693 93022 0 15.0 137.6 -53.18388 -73.34222 0 Bad point 92348 1539 10.2 161.8 -50.47043 -136.04083 2135 92348 1540 9.9 161.3 -50.47300 -136.03938 1565 92348 1541 9.7 162.0 -50.47553 -136.03802 2156 Bad point 92349 1553 10.4 94.0 -52.50063 -133.45880 5760 92349 1554 10.2 92.7 -52.50068 -133.45403 6191 92349 1555 10.3 94.6 -52.50085 -133.44947 4372 Depth looks suspicious, but several points involved - keep 93019 2000 12.8 22.9 -61.34190 -80.91150 4862 93019 2001 13.0 24.7 -61.33865 -80.90833 5501 93019 2002 13.0 23.2 -61.33530 -80.90548 6143 93019 2003 12.9 23.9 -61.33203 -80.90255 6777 93019 2004 12.5 24.6 -61.32893 -80.89962 7383 93019 2005 12.4 24.4 -61.32582 -80.89673 7990 93019 2006 12.4 23.8 -61.32263 -80.89392 7368 93019 2007 12.6 23.2 -61.31942 -80.89115 6742 93019 2008 12.7 24.1 -61.31618 -80.88820 6108 93019 2009 12.5 26.3 -61.31308 -80.88500 5487 93019 2010 12.4 28.0 -61.31007 -80.88163 4873