datrw::su::TraceHeaderStruct Struct Reference
SEG-Y and SU trace header as taken from segy.h coming with SeismicUnixsegy - trace identification header. More...
#include <suheaderstruct.h>
Collaboration diagram for datrw::su::TraceHeaderStruct:
Public Attributes | |
| short | afilf |
| alias filter frequency if used More... | |
| short | afils |
| alias filter slope More... | |
| int | cdp |
| Ensemble number (i.e. More... | |
| int | cdpt |
| Trace number within the ensemble. More... | |
| short | corr |
| correlated: 1 = no, 2 = yes More... | |
| short | counit |
| Coordinate units (see details). More... | |
| float | d1 |
| sample spacing for non-seismic data More... | |
| float | d2 |
| sample spacing between traces More... | |
| short | day |
| day of year More... | |
| short | delrt |
| Delay recording time (see details). More... | |
| unsigned short | dt |
| sample interval; in micro-seconds More... | |
| short | duse |
| Data use: 1 = Production 2 = Test. More... | |
| int | ep |
| Energy source point number. More... | |
| float | f1 |
| first sample location for non-seismic data More... | |
| float | f2 |
| first trace location More... | |
| int | fldr |
| Original field record number. More... | |
| short | gain |
| Gain type of field instruments code (see dateils). More... | |
| short | gaps |
| gap size (total number of groups dropped) More... | |
| int | gdel |
| Datum elevation at receiver group. More... | |
| int | gelev |
| Receiver group elevation from sea level (all elevations above the Vertical datum are positive and below are negative). More... | |
| short | grnlof |
| geophone group number of last trace within original field record More... | |
| short | grnofr |
| geophone group number of trace one within original field record More... | |
| short | grnors |
| geophone group number of roll switch position one More... | |
| short | gstat |
| Group static correction in milliseconds. More... | |
| short | gut |
| Uphole time at receiver group in milliseconds. More... | |
| int | gwdep |
| Water depth at receiver group. More... | |
| int | gx |
| Group coordinate - X. More... | |
| int | gy |
| Group coordinate - Y. More... | |
| short | hcf |
| high cut frequncy if used More... | |
| short | hcs |
| high cut slope More... | |
| short | hour |
| hour of day (24 hour clock) More... | |
| short | igc |
| instrument gain constant More... | |
| short | igi |
| instrument early or initial gain More... | |
| short | laga |
| Lag time A (see details). More... | |
| short | lagb |
| Lag time B (see details). More... | |
| short | lcf |
| low cut frequency if used More... | |
| short | lcs |
| low cut slope More... | |
| short | mark |
| mark selected traces More... | |
| short | minute |
| minute of hour More... | |
| short | mute |
| mute time–end More... | |
| short | muts |
| mute time–start More... | |
| short | nhs |
| Number of horizontally summed traces yielding this trace: 1 is one trace 2 is two summed traces, etc. More... | |
| short | nofilf |
| notch filter frequency if used More... | |
| short | nofils |
| notch filter slope More... | |
| unsigned short | ns |
| number of samples in this trace More... | |
| int | ntr |
| number of traces More... | |
| short | nvs |
| Number of vertically summed traces yielding this trace: 1 is one trace, 2 is two summed traces, etc. More... | |
| int | offset |
| Distance from the center of the source point to the center of the receiver group (negative if opposite to direction in which the line was shot). More... | |
| short | otrav |
| overtravel taper code: 1 = down (or behind), 2 = up (or ahead) More... | |
| short | scalco |
| Scalar to be applied to the next 4 entries to give the real value (see details). More... | |
| short | scalel |
| Scalar to be applied to the previous 7 entries to give the real value (see details). More... | |
| int | sdel |
| Datum elevation at source. More... | |
| int | sdepth |
| Source depth below surface (a positive number). More... | |
| short | sec |
| second of minute More... | |
| int | selev |
| Surface elevation at source. More... | |
| short | sfe |
| sweep frequency at end More... | |
| short | sfs |
| sweep frequency at start More... | |
| short | shortpad |
| alignment padding More... | |
| short | slen |
| sweep length in ms More... | |
| short | sstat |
| Source static correction in milliseconds. More... | |
| short | stae |
| sweep trace length at end in ms More... | |
| short | stas |
| sweep trace length at start in ms More... | |
| short | styp |
| sweep type code: 1 = linear, 2 = cos-squared, 3 = other More... | |
| short | sut |
| Uphole time at source in milliseconds. More... | |
| int | swdep |
| Water depth at source. More... | |
| short | swevel |
| Subweathering velocity. More... | |
| int | sx |
| Source coordinate - X. More... | |
| int | sy |
| Source coordinate - Y. More... | |
| short | tatyp |
| taper type: 1=linear, 2=cos^2, 3=other More... | |
| short | timbas |
| time basis code: 1 = local, 2 = GMT, 3 = other More... | |
| int | tracf |
| Trace number within original field record. More... | |
| int | tracl |
| Trace sequence number within line. More... | |
| int | tracr |
| Trace sequence number within SEG Y file. More... | |
| short | trid |
| Trace identification code (see details). More... | |
| short | trwf |
| trace weighting factor, defined as 1/2^N volts for the least sigificant bit More... | |
| short | tstat |
| Total static applied in milliseconds (zero if no static has been applied). More... | |
| short | unass [14] |
| unassigned (see details). More... | |
| float | ungpow |
| negative of power used for dynamic range compression More... | |
| float | unscale |
| reciprocal of scaling factor to normalize range More... | |
| short | wevel |
| Weathering velocity. More... | |
| short | year |
| year data recorded More... | |
Detailed Description
SEG-Y and SU trace header as taken from segy.h coming with SeismicUnix
segy - trace identification header.
Only brief descriptions are available in the list. Some fields are described in detail in the detailed section of the field.
Copyright (C) 2007, Colorado School of Mines, All rights reserved.
This struct is copied from segy.h in the SeismicUnix distribution. The author of the code is simply called john there. The code of SeismicUnix is copyright by the Colorado School of Mines. The legal statement coming along with SeismicUnix is reproduced at the end of the source file.
Definition at line 54 of file suheaderstruct.h.
The documentation for this struct was generated from the following file:
