Project Title: Seismometer to Investigate Ice and Ocean Structure (SIIOS) NASA Grant: 80NSSC17K0229 Dataset Title: Northwest Greenland Active Source Seismic Experiment Data of Expedition: June 2018 Date of Submission: 05/11/2021 Point of Contact: Dr. Nicholas Schmerr University of Maryland Department of Geology 8000 Regents Dr. College Park, MD 20742-4211 Email: nschmerr@umd.edu Ph: +1 301 405-5385 Project Investigators: Hop Bailey, Principal Investigator (University of Arizona) Brad Avenson (Silicon Audio) Veronica Bray Durfey (University of Arizona) Juliette Broadbeck (University of Arizona) Christina Carr (University of Alaska Fairbanks) Peter Dahl (University of Washington) Daniella DellaGiustina (University of Arizona) Namrah Habib (University of Arizona) Christyna Gardner (Utah State University) Ross Maguire (University of Maryland, College Park) Angela Marusiak (University of Maryland, College Park) Erin Pettit (Oregon State University) Nicholas Schmerr (University of Maryland, College Park) Natalie Wagner (University of Alaska, Fairbanks) Renee Weber (NASA Marshall Space Flight Center) Directory Structure: SEGY: Converted SEGY formatted files. Note that SEGY does not allow a float sample rate, so the header sample rate of 62 microseconds must be updated to 62.5 microseconds to get the proper time for SEGY traces. See the attached table below for location of the lines. SEGY Format Description: Norris, M.W.; Faichney, A.K. (Eds.) (2002). SEG-Y rev1 Data Exchange format. Tulsa, OK: Society of Exploration Geophysicists https://www.seg.org/Portals/0/SEG/News%20and%20Resources/Technical%20Standards/seg_y_rev1.pdf SIIOS-Greenland-ActiveSource-Description.pdf: A pdf file that contains the information on the deployment details, source used, and the project motivation. README.txt (this file): Basic information about the dataset, and a description of the field note details that were populated into the metadata of the SEGY files. Header Information shot number : sequential ordering of the active soruce filename : SEGY file label lat : latitude of the first geophone (0 m offset) lon : longitude of the first geophone (0 m offset) offset : location of the source relative to the 1st geophone total offset : location relative to the first source of all lines line : line designator elevation : altitude (meters) azimuth : direction of the line from the first geophone (degrees from north) Shot Table ------------------------------------------------------------------------------- shot number, filename, lat (geophone 1), lon (geophone 1), offset (m), total offset (m), line, elevation (m), azimuth 1 shot_001.sgy 78.05494 -68.43001 -115 0 Line1 1359 45 2 shot_002.sgy 78.05494 -68.43001 0 0 Line1 1359 45 3 shot_003.sgy 78.05494 -68.43001 115 0 Line1 1359 45 4 shot_004.sgy 78.05494 -68.43001 230 0 Line1 1359 45 5 shot_005.sgy 78.05635 -68.42283 -115 230 Line2 1355 45 6 shot_006.sgy 78.05635 -68.42283 0 230 Line2 1355 45 7 shot_007.sgy 78.05635 -68.42283 115 230 Line2 1355 45 8 shot_008.sgy 78.05635 -68.42283 230 230 Line2 1355 45 9 shot_009.sgy 78.05787 -68.41564 -115 460 Line3 1360 45 10 shot_010.sgy 78.05787 -68.41564 0 460 Line3 1360 45 11 shot_011.sgy 78.05787 -68.41564 115 460 Line3 1360 45 12 shot_012.sgy 78.05787 -68.41564 230 460 Line3 1360 45 13 shot_013.sgy 78.05908 -68.40867 -115 690 Line4 1357 45 14 shot_014.sgy 78.05908 -68.40867 0 690 Line4 1357 45 15 shot_015.sgy 78.05908 -68.40867 115 690 Line4 1357 45 16 shot_016.sgy 78.05908 -68.40867 230 690 Line4 1357 45 17 shot_017.sgy 78.06075 -68.40117 -115 920 Line5 1355 45 18 shot_018.sgy 78.06075 -68.40117 0 920 Line5 1355 45 19 shot_019.sgy 78.06075 -68.40117 115 920 Line5 1355 45 20 shot_020.sgy 78.06075 -68.40117 230 920 Line5 1355 45 21 shot_021.sgy 78.06218 -68.39438 -115 1150 Line6 1351 45 22 shot_022.sgy 78.06218 -68.39438 0 1150 Line6 1351 45 23 shot_023.sgy 78.06218 -68.39438 115 1150 Line6 1351 45 24 shot_024.sgy 78.06218 -68.39438 230 1150 Line6 1351 45 25 shot_025.sgy 78.0636 -68.38708 -115 1380 Line7 1365 45 26 shot_026.sgy 78.0636 -68.38708 0 1380 Line7 1365 45 27 shot_027.sgy 78.0636 -68.38708 115 1380 Line7 1365 45 28 shot_028.sgy 78.0636 -68.38708 230 1380 Line7 1365 45 29 shot_029.sgy 78.06505 -68.37998 -115 1610 Line8 1358 45 30 shot_030.sgy 78.06505 -68.37998 0 1610 Line8 1358 45 31 shot_031.sgy 78.06505 -68.37998 115 1610 Line8 1358 45 32 shot_032.sgy 78.06505 -68.37998 230 1610 Line8 1358 45 33 shot_033.sgy 78.06651 -68.37261 -115 1840 Line9 1364 45 34 shot_034.sgy 78.06651 -68.37261 0 1840 Line9 1364 45 35 shot_035.sgy 78.06651 -68.37261 115 1840 Line9 1364 45 36 shot_036.sgy 78.06651 -68.37261 230 1840 Line9 1364 45 37 shot_037.sgy 78.06791 -68.36563 -115 2070 Line10 1365 45 38 shot_038.sgy 78.06791 -68.36563 0 2070 Line10 1365 45 39 shot_039.sgy 78.06791 -68.36563 115 2070 Line10 1365 45 40 shot_040.sgy 78.06791 -68.36563 230 2070 Line10 1365 45