The default fields that make up the USP_TRACE structure are
defined in
"${DDSROOT}/src/lib/dds3/usp.fmt.dds"
and may be modified by editing that file and putting it into a
directory defined by "${DDS_PATH}".
These defaults are summarized by their nominal offset, name, type,
and element count.
Off Name Type† N Comment
--- --------- ---- - ----------------------------------
0 USP_GREEN USP_INT 1 "USP green word prefix"
4 SGRNum USP_SHORT 1 "SGR number"
6 SGRAmp USP_SHORT 1 "SGR PreAmp Gain, Filter"
8 SGRDat USP_INT 1 "SGR Julian Date Recorded"
12 FlReFN USP_SHORT 1 "Field Record File Number"
14 FlStNm USP_SHORT 1 "Field Station Number"
16 PREPIn USP_SHORT 1 "PREP Initiation Static"
18 InStUn USP_SHORT 1 "Initiation Static Unapplied"
20 InStAp USP_SHORT 1 "Initiation Static Applied"
22 PREPRc USP_SHORT 1 "PREP Reception Static"
24 RcStUn USP_SHORT 1 "Reception Static Unapplied"
26 RcStAp USP_SHORT 1 "Reception Static Applied"
28 ToStAp USP_SHORT 1 "Total Static Applied"
30 ToTmAA USP_SHORT 1 "Total Timing Adjust Applied"
32 ToStUn USP_SHORT 1 "Total Static Unapplied"
34 ToTmAU USP_SHORT 1 "Total Timing Adjust Unapplied"
36 RcComp USP_SHORT 1 "Receiver component xyz code"
38 SrComp USP_SHORT 1 "Source component xyz code"
40 SrStat USP_SHORT 1 "Source floating datum static"
42 RcStat USP_SHORT 1 "Receiver floating datum static"
44 TrHdID USP_SHORT 1 "Trace Header Identifier"
46 SrRcAz USP_SHORT 1 "Source-to-Receiver Azimuth"
48 SrPtXC USP_INT 1 "Src Point X-Coordinate 3D"
52 SrPtYC USP_INT 1 "Src Point Y-Coordinate 3D"
56 RcPtXC USP_INT 1 "Rec Point X-Coordinate 3D"
60 RcPtYC USP_INT 1 "Rec Point Y-Coordinate 3D"
64 SrRcMX USP_INT 1 "Src Rec Midpoint X 3D"
68 SrRcMY USP_INT 1 "Src Rec Midpoint Y 3D"
72 CDPBCX USP_INT 1 "CDP Bin Center X Coordinate"
76 CDPBCY USP_INT 1 "CDP Bin Center Y Coordinate"
80 InTrCn USP_INT 1 "Incremental Trace Counter"
84 FlDtEl USP_SHORT 1 "Floating Datum Elev this CDP"
86 MulSkw USP_SHORT 1 "Multiplex Skew (ms*1000)"
88 PerSPO USP_SHORT 1 "Perpendicular Src Pt Off y"
90 InlSPO USP_SHORT 1 "Inline Src Pt Off x"
92 TiLine USP_SHORT 6 "Tie Line Indicator 1-6"
104 TVPT01 USP_SHORT 1 "Time-Velocity Pairs 1-20"
106 TVPV01 USP_SHORT 1 "Time-Velocity Pairs 1-20"
108 TVPT02 USP_SHORT 1
110 TVPV02 USP_SHORT 1
112 TVPT03 USP_SHORT 1
114 TVPV03 USP_SHORT 1
116 TVPT04 USP_SHORT 1
118 TVPV04 USP_SHORT 1
120 TVPT05 USP_SHORT 1
122 TVPV05 USP_SHORT 1
124 TVPT06 USP_SHORT 1
126 TVPV06 USP_SHORT 1
128 TVPT07 USP_SHORT 1
130 TVPV07 USP_SHORT 1
132 TVPT08 USP_SHORT 1
134 TVPV08 USP_SHORT 1
136 TVPT09 USP_SHORT 1
138 TVPV09 USP_SHORT 1
140 TVPT10 USP_SHORT 1
142 TVPV10 USP_SHORT 1
144 TVPT11 USP_SHORT 1
146 TVPV11 USP_SHORT 1
148 TVPT12 USP_SHORT 1
150 TVPV12 USP_SHORT 1
152 TVPT13 USP_SHORT 1
154 TVPV13 USP_SHORT 1
156 TVPT14 USP_SHORT 1
158 TVPV14 USP_SHORT 1
160 TVPT15 USP_SHORT 1
162 TVPV15 USP_SHORT 1
164 TVPT16 USP_SHORT 1
166 TVPV16 USP_SHORT 1
168 TVPT17 USP_SHORT 1
170 TVPV17 USP_SHORT 1
172 TVPT18 USP_SHORT 1
174 TVPV18 USP_SHORT 1
176 TVPT19 USP_SHORT 1
178 TVPV19 USP_SHORT 1
180 TVPT20 USP_SHORT 1
182 TVPV20 USP_SHORT 1
184 RedVel USP_SHORT 1 "Reduction Velocity for vred"
186 RedTim USP_SHORT 1 "Time of first sample for vred"
188 VPick1 USP_SHORT 1 "Auto Static Pick 1"
190 VPick2 USP_SHORT 1 "Auto Static Pick 2"
192 LRcCDP USP_SHORT 1 "Last Record CDP"
194 CabDep USP_SHORT 1 "Cable Depth"
196 WDepDP USP_SHORT 1 "Water Depth Above Depth Point"
198 DPOPer USP_SHORT 1 "Depth Point Offset Perpendicular"
200 ShtDep USP_SHORT 1 "shot depth"
202 UphlTm USP_SHORT 1 "uphole time in ms"
204 DpPtLt USP_INT 1 "depth pt lat (deg* 10^5)"
208 DpPtLn USP_INT 1 "depth pt lon (deg* 10^5)"
212 FoldNm USP_SHORT 1 "fold"
214 RecNum USP_SHORT 1 "record number"
216 TrcNum USP_SHORT 1 "trace number"
218 SrcPnt USP_SHORT 1 "src point above this depth pt"
220 SrcLoc USP_SHORT 1 "src location ind mult by 10"
222 PrRcNm USP_SHORT 1 "permanent record number PRI"
224 PrTrNm USP_SHORT 1 "permanent trace number PTI"
226 SrPtEl USP_SHORT 1 "source point elevation"
228 SrPrLt USP_INT 1 "source point lat (deg* 10^5)"
232 SrPrLn USP_INT 1 "source point lon (deg* 10^5)"
236 DstUsg USP_SHORT 1 "unsigned trace distance"
238 RecInd USP_SHORT 1 "rec location GI"
240 DstSgn USP_SHORT 1 "signed trace distance"
242 GrpElv USP_SHORT 1 "group elevation"
244 LinInd USP_SHORT 1 "line 3D"
246 DphInd USP_SHORT 1 "depth "
248 DePtEl USP_SHORT 1 "depth point elevation"
250 RfSrEl USP_SHORT 1 "reference surface elevation"
252 StaCor USP_SHORT 1 "correction"
254 DatShf USP_SHORT 1 "datum "
256 SoPtNm USP_SHORT 1 "source point number"
258 SoPtAl USP_CHAR 1 "source point alphabetic suffix"
259 SoPtBi USP_CHAR 1 "source point bias /10000"
260 Samples USP_FLOAT -1 "trace samples"
† See
Data Types for more
details.