The profile-survey cross-section ( X - distance offshore and Z - depth) data are stored in a single file named DELILAH.2d which is sorted by profile number and then by survey number. The alongshore location, in the FRF coordinate system, for each of the Minigrid profile lines is listed in the table below. Cross-shore distances are measured relative to a shore-parallel baseline with its origin at the SE corner of the FRF property.
Profile Longshore Line Distance Number (m) ------ -------- 170 1280 180 1234 195 1189 200 1143 210 1097 215 1074 220 1052 225 1029 230 1006 235 997 240 954 250 914 255 892 260 869 265 846 270 823 275 797 280 777 285 754 290 732
The data are stored in an EDIT2 format. Two profile-surveys in the EDIT2 format starting with an initial Header Record are shown below.
Sample: EDIT2 Format Data
00 112M NGVDDELILAH CRAB Surveys 961030 WAB DE170 21901001 924319 -464 631 606 675 616 713 570 754 463 DE170 22 806 348 808 348 896 283 935 300 941 302 945 307 950 308 DE170 23 956 310 985 289 1011 283 1028 270 1036 259 1046 247 1059 225 DE170 24 1135 91 1146 77 1157 69 1165 59 1173 53 1180 46 1188 39 DE170 25 1227 15 1234 12 1242 8 1246 6 1261 2 1269 -2 1276 -7 DE170 26 1285 -4 1292 -10 1298 -9 1325 -22 1334 -30 1340 -32 1351 -35 DE170 27 1359 -36 1367 -39 1376 -49 1381 -52 1389 -57 1400 -63 1406 -69 DE170 28 1414 -77 1425 -82 1431 -84 1438 -88 1445 -93 1452 -95 1459 -98 DE170 29 1468 -100 1475 -103 1480 -105 1487 -106 1492 -107 1497 -108 1504 -108 DE170 2: 1514 -110 1523 -111 1530 -111 1536 -111 1543 -111 1551 -109 1558 -110 DE170 2; 1565 -109 1570 -109 1579 -109 1585 -108 1591 -106 1598 -106 1605 -106 DE170 2& 1611 -106 1618 -103 1625 -103 1630 -103 1637 -104 1643 -102 1650 -100
The first line is a Header Record that defines details of the data format including the units of the data and how many decimal
places are stored for both distance and elevation. The Header Record format is:
Field FORTRAN Format 00 A2 Blank 8X Data format (1=Edit2, 2=Edit3, 3=Edit3) I2 Distance decimal places I1 Elevation decimal places I1 Units (FT or M ) A2 Datum Description (NGVD, MSL, etc) A4 Project Description A50 Data processing date A6 Blank space 1X Data processors Initials A4
The survey data start with an 80 character line followed by a series of 80 character continuation lines. Each block contains the data for one survey of one profile (known as a profile-survey). "Profile" number refers to a particular location, the "survey" number identifies the consecutive survey of that location. The data are stored in meters as integer values according to the Header Record specification. For the DELILAH data decimal places are 1 for distances and 2 for elevations. Elevation data are referenced to the National Geodetic Vertical Datum of 1929 (NGVD). The locality code defines the beach where the data were collected. For DELILAH the locality code is DE.
The Edit2 format can be deciphered as follows:
Initial Line: FORTRAN Format Locality Code A2 Profile Number A3 Survey Number I4 Line Number (always 1) A1 Date (YRMODA) I6 Time I5 Number of Survey Points I3 Minimum Elevation Reached F5.2 Information Label A11 First 4 Distance-Elevation Pairs 4(F5.1, F5.2) Continuation Lines: Locality Code A2 Profile Number A3 Survey Number I4 Line Number (2-9, A-Z, a-z, misc characters) A1 Seven Distance-Elevation Pairs 7(F5.1, F5.2)
In FORTRAN, the block can be read with the following read statement:
Character Locality*2,iProfile*3,
read(7,100)Locality,iProfile,iSurvey,iDate,iTime,Npts,aMin,Label, &(x(i),y(i),i=1,Npts) 100 format(A2,A3,I4,I6,I5,F5.2,A11,4(F5.1,F5.2),/,(10x,7(F5.1,F5.2)))
Note: For you non-FORTRAN folks, A=alphanumeric field, F=floating point, and I=Integer field. The associated number is the field width in characters, and the decimal point indicates where the decimal place should go. (ie: F5.1 = a real number 5 characters wide with one decimal place)
To access the DELILAH 2D survey data file DELILAH.2d
DELILAH Home | Overview | Surveys | Video | Sediment | Calibrations | Instruments | Sled | People & Reports | Data | Report