Correlator ELD Tables
From CwWiki
The ELD(Equivalent Log Depth) TABLE contains stretch rate, mudline adjusted log offset and the stretch/compress tie points which are used to build the eld data record from the spliced record.
The ELD stretch rate and mudline adjusted log offset are determined using the automatic integration calculation features of the Auto Core-Log Integration tool under the right tab.
The ELD TABLE tie points are determined using the manual stretch/compress integration features of the Core-Log Integration under the right tab.
The ELD TABLE can be used to generate the full stretched/compressed spliced data records.
- the records are core data
The ELD TABLE should be saved frequently as the core-log integration progresses.
The file is written as ASCII text or XML - these data can be downloaded and pasted directly into the Initial Reports volumes.
The ELD TABLE format is as follows:
Header
"Equivalent Log Depth Table:" "Leg" leg "Site" site "Overall" Y/N "MudlineOffset" mudline adjusted log offset "Stretch/Compress" stretch rate "Affine" Y/N affine file name * Overall Y : core has been stretched and log has been depth-shifted * Affine Y : core has been correlated and depth-shifted * Mudline and Stretch rate are generated by auto core-log integration Equivalent Log Depth Table: Leg 162 Site 984 Overall Y MudlineOffset -0.30 Stretch/Compress 93.00 Affine Y /Users/hjhur/Project/Correlator/DATA/LEG162/984.affine.table
After processing Auto core-log integration, ELD stretch rate and mudline adjusted log offset is generated. ELD stretch rate is applied to core data, and mudline adjusted log offset is applied for depth shift of log data.
Body
"Hole" hole, "Core" core number, "AffineOffset" depth offset, Y/N "#Ties" number of manual core-log ties attached to the core * Y : core has been correlated and depth-shifted Hole B Core 14 AffineOffset 8.330000 Y #Ties 1 * According to number of manual core-log stretch tie, ELD TABLE has the # tie information site, hole, core number, section type, section number, top, bottom, mbsf, mcd, a, b, "S/N" * mbsf : meters below seafloor * mcd : meters composite depth * a, b : It's used for calculating stretch/compressed depth * a and b are generated by manual core-log integration * S/N : share or not 984 B 14 H 6 115.4000 115.4000 131.1500 139.4800 129.2981 1.1061 0.5802 S
984 Hole-B, Core 14 has one manual core-log stretch tie at 139.48, and from that point, cores will be stretched/compressed until the next tie point.
How to calculate eld :
- eld = (mcd * stretch rate - b) * a + b;
Here is the ELD TABLE.
Text Version
Equivalent Log Depth Table: Leg 162 Site 984 Overall Y MudlineOffset -0.30 Stretch/Compress 93.00 Affine Y /Users/hjhur/Project/Correlator/DATA/LEG162/984.affine.table Hole A Core 1 AffineOffset 0.000000 N #Ties 0 Hole A Core 2 AffineOffset 0.450000 Y #Ties 0 Hole A Core 3 AffineOffset 0.540000 Y #Ties 0 Hole A Core 4 AffineOffset 0.890000 Y #Ties 0 Hole A Core 5 AffineOffset 2.140000 Y #Ties 0 Hole A Core 6 AffineOffset 2.550000 Y #Ties 0 Hole A Core 7 AffineOffset 4.280000 Y #Ties 0 Hole A Core 8 AffineOffset 5.080000 Y #Ties 0 Hole A Core 9 AffineOffset 5.870000 Y #Ties 0 Hole A Core 10 AffineOffset 6.420000 Y #Ties 0 Hole A Core 11 AffineOffset 8.420000 Y #Ties 0 Hole A Core 12 AffineOffset 8.280000 Y #Ties 0 Hole A Core 13 AffineOffset 8.980000 Y #Ties 0 Hole A Core 14 AffineOffset 10.000000 Y #Ties 1 984 A 14 H 2 103.4000 103.4000 121.6300 131.6300 0.9383 -0.4471 S Hole A Core 15 AffineOffset 10.580000 Y #Ties 0 Hole A Core 16 AffineOffset 11.300000 Y #Ties 0 Hole A Core 17 AffineOffset 12.460000 Y #Ties 0 Hole A Core 18 AffineOffset 13.640000 Y #Ties 0 Hole A Core 19 AffineOffset 14.420000 Y #Ties 0 Hole B Core 1 AffineOffset 0.000000 N #Ties 0 Hole B Core 2 AffineOffset 0.050000 Y #Ties 0 Hole B Core 3 AffineOffset 1.260000 Y #Ties 0 Hole B Core 4 AffineOffset 2.020000 Y #Ties 0 Hole B Core 5 AffineOffset 2.760000 Y #Ties 0 Hole B Core 6 AffineOffset 2.710000 Y #Ties 0 Hole B Core 7 AffineOffset 3.220000 Y #Ties 0 Hole B Core 8 AffineOffset 3.740000 Y #Ties 0 Hole B Core 9 AffineOffset 4.740000 Y #Ties 0 Hole B Core 10 AffineOffset 5.660000 Y #Ties 0 Hole B Core 11 AffineOffset 6.090000 Y #Ties 0 Hole B Core 12 AffineOffset 6.910000 Y #Ties 0 Hole B Core 13 AffineOffset 7.950000 Y #Ties 1 984 B 13 H 5 109.5000 109.5000 120.1000 128.0500 0.9161 -0.2747 S Hole B Core 14 AffineOffset 8.330000 Y #Ties 1 984 B 14 H 6 115.4000 115.4000 131.1500 139.4800 1.1061 0.5802 S Hole B Core 15 AffineOffset 9.620000 Y #Ties 2 984 B 15 H 3 79.4000 79.4000 135.7900 145.4100 0.8829 -0.4379 S 984 B 15 H 6 37.4000 37.4000 139.8700 149.4900 1.1587 0.8471 S Hole B Core 16 AffineOffset 10.690000 Y #Ties 2 984 B 16 H 3 10.4000 10.4000 144.6000 155.2900 0.5811 -0.7480 S 984 B 16 H 4 58.4000 58.4000 146.5800 157.2700 1.0000 0.0000 S Hole B Core 17 AffineOffset 11.480000 Y #Ties 0 Hole B Core 18 AffineOffset 12.240000 Y #Ties 0 Hole B Core 19 AffineOffset 13.860000 Y #Ties 0 Hole B Core 20 AffineOffset 13.370000 Y #Ties 0 Hole B Core 21 AffineOffset 14.070000 Y #Ties 0 Hole B Core 22 AffineOffset 14.750000 Y #Ties 0 Hole B Core 23 AffineOffset 15.750000 Y #Ties 0 Hole B Core 24 AffineOffset 16.110000 Y #Ties 0 Hole B Core 25 AffineOffset 16.360000 Y #Ties 0 Hole B Core 26 AffineOffset 16.830000 Y #Ties 0 Hole B Core 27 AffineOffset 16.830000 N #Ties 0 Hole B Core 28 AffineOffset 16.830000 N #Ties 0 Hole B Core 29 AffineOffset 16.830000 N #Ties 0 Hole B Core 30 AffineOffset 16.830000 N #Ties 0 Hole B Core 31 AffineOffset 16.830000 N #Ties 0 Hole B Core 32 AffineOffset 16.830000 N #Ties 0 Hole B Core 33 AffineOffset 16.830000 N #Ties 0 Hole B Core 34 AffineOffset 16.830000 N #Ties 0 Hole B Core 35 AffineOffset 16.830000 N #Ties 0 Hole B Core 36 AffineOffset 16.830000 N #Ties 0 Hole B Core 37 AffineOffset 16.830000 N #Ties 0 Hole B Core 38 AffineOffset 16.830000 N #Ties 0 Hole B Core 39 AffineOffset 16.830000 N #Ties 0 Hole B Core 40 AffineOffset 16.830000 N #Ties 0 Hole B Core 41 AffineOffset 16.830000 N #Ties 0 Hole B Core 42 AffineOffset 16.830000 N #Ties 0 Hole B Core 43 AffineOffset 16.830000 N #Ties 0 Hole B Core 44 AffineOffset 16.830000 N #Ties 0 Hole B Core 45 AffineOffset 16.830000 N #Ties 0 Hole B Core 46 AffineOffset 16.830000 N #Ties 0 Hole B Core 47 AffineOffset 16.830000 N #Ties 0 Hole B Core 53 AffineOffset 16.830000 N #Ties 0 Hole C Core 1 AffineOffset 0.000000 N #Ties 0 Hole C Core 2 AffineOffset 0.550000 Y #Ties 0 Hole C Core 3 AffineOffset 1.680000 Y #Ties 0 Hole C Core 4 AffineOffset 2.860000 Y #Ties 0 Hole C Core 5 AffineOffset 3.320000 Y #Ties 0 Hole C Core 6 AffineOffset 4.460000 Y #Ties 0 Hole C Core 7 AffineOffset 5.590000 Y #Ties 0 Hole C Core 8 AffineOffset 6.340000 Y #Ties 0 Hole C Core 9 AffineOffset 6.650000 Y #Ties 0 Hole C Core 10 AffineOffset 8.010000 Y #Ties 0 Hole C Core 11 AffineOffset 9.220000 Y #Ties 0 Hole C Core 12 AffineOffset 8.790000 Y #Ties 0 Hole C Core 13 AffineOffset 8.650000 Y #Ties 0 Hole C Core 14 AffineOffset 9.280000 Y #Ties 0 Hole C Core 15 AffineOffset 9.870000 Y #Ties 0 Hole C Core 16 AffineOffset 10.470000 Y #Ties 0 Hole C Core 17 AffineOffset 11.350000 Y #Ties 0 Hole C Core 18 AffineOffset 12.080000 Y #Ties 0 Hole C Core 19 AffineOffset 12.500000 Y #Ties 0 Hole C Core 20 AffineOffset 12.600000 Y #Ties 0 Hole C Core 21 AffineOffset 12.680000 Y #Ties 0 Hole C Core 22 AffineOffset 13.700000 Y #Ties 0 Hole C Core 23 AffineOffset 14.720000 Y #Ties 0 Hole C Core 24 AffineOffset 15.500000 Y #Ties 0 Hole C Core 25 AffineOffset 16.140000 Y #Ties 0 Hole C Core 26 AffineOffset 17.530000 Y #Ties 0 Hole C Core 27 AffineOffset 17.530000 N #Ties 0 Hole C Core 28 AffineOffset 17.530000 N #Ties 0 Hole C Core 29 AffineOffset 17.530000 N #Ties 0 Hole C Core 30 AffineOffset 17.530000 N #Ties 0 Hole C Core 31 AffineOffset 17.530000 N #Ties 0
XML Version
<?xml version="1.0" encoding="UTF-8"?> <Correlator version="1.0"> <Data type ="eld table" leg ="162" site="984" mudlineoffset="-0.30" stretchrate="93.00" applied="Y" affinetable="filename"> <Hole value="A"> <Core id="1" type="H" applied="N" offset ="0.000000" /> <Core id="2" type="H" applied="Y" offset ="0.450000" /> <Core id="3" type="H" applied="Y" offset ="0.540000" /> <Core id="4" type="H" applied="Y" offset ="0.890000" /> <Core id="5" type="H" applied="Y" offset ="2.140000" /> <Core id="6" type="H" applied="Y" offset ="2.550000" /> <Core id="7" type="H" applied="Y" offset ="4.280000" /> <Core id="8" type="H" applied="Y" offset ="5.080000" /> <Core id="9" type="H" applied="Y" offset ="5.870000" /> <Core id="10" type="H" applied="Y" offset ="6.420000" /> <Core id="11" type="H" applied="Y" offset ="8.420000" /> <Core id="12" type="H" applied="Y" offset ="8.280000" /> <Core id="13" type="H" applied="Y" offset ="8.980000" /> <Core id="14" type="H" applied="Y" offset ="10.000000" > <LogTie id="1" type="H" section="2" bottom="103.4000" top="103.4000" mbsf="121.6300" mcd="131.6300" a="0.9383" b="-0.4471" status="N" /> </Core> <Core id="15" type="H" applied="Y" offset ="10.580000" /> </Hole> </Data> </Correlator>
