ArcticNet Basemap Series: 55_45_N_57_00_W

Overview Map

Index Map
56_00_N_60_00_W

Downloads
ESRI grid files for:
This basemap
NW N NE
W E
SW S SE
BATHYMETRY    BACKSCATTER
Home... About these basemaps...

Source data

2005_Amundsen

 2006_Amundsen

 2007_Amundsen

 2010_Amundsen

2011_Amundsen

Survey Lines for each area 

Data from source: 2005_Amundsen
LINE - /drives/hudson/disk1/data/2005_Amundsen/002_Labrador_Sea/EM300/ss/JD220/0001_20050808_194641.ss_bp - 358 pings included
LINE - /drives/hudson/disk1/data/2005_Amundsen/002_Labrador_Sea/EM300/ss/JD220/0002_20050808_201641.ss_bp - 347 pings included
LINE - /drives/hudson/disk1/data/2005_Amundsen/002_Labrador_Sea/EM300/ss/JD220/0003_20050808_204641.ss_bp - 374 pings included
LINE - /drives/hudson/disk1/data/2005_Amundsen/002_Labrador_Sea/EM300/ss/JD220/0004_20050808_211641.ss_bp - 539 pings included
LINE - /drives/hudson/disk1/data/2005_Amundsen/002_Labrador_Sea/EM300/ss/JD220/0005_20050808_214641.ss_bp - 198 pings included



Data from source: 2006_Amundsen
LINE - /drives/hudson/disk1/data/2006_Amundsen/004_LabradorSea/EM300/ss/JD239/0002_20060827_092338.ss_bp - 272 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/004_LabradorSea/EM300/ss/JD239/0003_20060827_105142.ss_bp - 321 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/004_LabradorSea/EM300/ss/JD239/0004_20060827_112142.ss_bp - 352 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/004_LabradorSea/EM300/ss/JD239/0005_20060827_115142.ss_bp - 364 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/004_LabradorSea/EM300/ss/JD239/0006_20060827_122142.ss_bp - 454 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/004_LabradorSea/EM300/ss/JD239/0007_20060827_125142.ss_bp - 440 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/004_LabradorSea/EM300/ss/JD239/0008_20060827_132142.ss_bp - 296 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/004_LabradorSea/EM300/ss/JD239/0022_20060827_192842.ss_bp - 94 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/006_Makkovik/EM300/ss/JD239/0000_20060827_194704.ss_bp - 191 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/006_Makkovik/EM300/ss/JD240/0016_20060828_021045.ss_bp - 51 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/006_Makkovik/EM300/ss/JD240/0017_20060828_024045.ss_bp - 7 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/006_Makkovik/EM300/ss/JD240/0018_20060828_024151.ss_bp - 140 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/006_Makkovik/EM300/ss/JD240/0019_20060828_025731.ss_bp - 98 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/006_Makkovik/EM300/ss/JD240/0031_20060828_075641.ss_bp - 42 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/006_Makkovik/EM300/ss/JD240/0032_20060828_082358.ss_bp - 171 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/006_Makkovik/EM300/ss/JD240/0033_20060828_084306.ss_bp - 98 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/006_Makkovik/EM300/ss/JD240/0064_20060828_231242.ss_bp - 120 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/006_Makkovik/EM300/ss/JD240/0065_20060828_233941.ss_bp - 252 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/006_Makkovik/EM300/ss/JD241/0066_20060829_000940.ss_bp - 326 pings included
LINE - /drives/hudson/disk1/data/2006_Amundsen/006_Makkovik/EM300/ss/JD241/0067_20060829_003940.ss_bp - 189 pings included



Data from source: 2007_Amundsen
LINE - /drives/hudson/disk1/data/2007_Amundsen/001_LabSea_South/EM300/ss/JD210/0033_20070729_203259.ss_bp - 321 pings included
LINE - /drives/hudson/disk1/data/2007_Amundsen/001_LabSea_South/EM300/ss/JD210/0034_20070729_210259.ss_bp - 1360 pings included
LINE - /drives/hudson/disk1/data/2007_Amundsen/001_LabSea_South/EM300/ss/JD210/0035_20070729_213259.ss_bp - 858 pings included
LINE - /drives/hudson/disk1/data/2007_Amundsen/001_LabSea_South/EM300/ss/JD210/0036_20070729_220259.ss_bp - 548 pings included
LINE - /drives/hudson/disk1/data/2007_Amundsen/001_LabSea_South/EM300/ss/JD210/0037_20070729_223259.ss_bp - 298 pings included



Data from source: 2010_Amundsen
LINE - /drives/viscount/disk1/data/2010_Amundsen/025_Labrador/EM302/ss/JD301/0202_20101028_200200.ss_MS_bp - 2045 pings included
LINE - /drives/viscount/disk1/data/2010_Amundsen/025_Labrador/EM302/ss/JD301/0203_20101028_203159.ss_MS_bp - 3369 pings included
LINE - /drives/viscount/disk1/data/2010_Amundsen/025_Labrador/EM302/ss/JD301/0204_20101028_210159.ss_MS_bp - 3094 pings included



Data from source: 2011_Amundsen
LINE - /drives/berg/disk1/data/2011_Amundsen/002_Labrador_Sea/EM302/ss/JD204/0037_20110723_053926.ss_MS_bp - 665 pings included
LINE - /drives/berg/disk1/data/2011_Amundsen/002_Labrador_Sea/EM302/ss/JD204/0036_20110723_050924.ss_MS_bp - 710 pings included
LINE - /drives/berg/disk1/data/2011_Amundsen/002_Labrador_Sea/EM302/ss/JD204/0041_20110723_073922.ss_MS_bp - 99 pings included
LINE - /drives/berg/disk1/data/2011_Amundsen/002_Labrador_Sea/EM302/ss/JD204/0039_20110723_063925.ss_MS_bp - 743 pings included
LINE - /drives/berg/disk1/data/2011_Amundsen/002_Labrador_Sea/EM302/ss/JD204/0038_20110723_060923.ss_MS_bp - 703 pings included
LINE - /drives/berg/disk1/data/2011_Amundsen/002_Labrador_Sea/EM302/ss/JD204/0040_20110723_070924.ss_MS_bp - 400 pings included
LINE - /drives/berg/disk1/data/2011_Amundsen/002_Labrador_Sea/EM302/ss/JD204/0034_20110723_040925.ss_MS_bp - 396 pings included
LINE - /drives/berg/disk1/data/2011_Amundsen/002_Labrador_Sea/EM302/ss/JD204/0035_20110723_043923.ss_MS_bp - 778 pings included
Created: 20140319 by J.Muggah 56_00_N_60_00_W 56_00_N_59_30_W 56_00_N_59_00_W 56_00_N_58_30_W 56_00_N_58_00_W 56_00_N_57_30_W 56_00_N_57_00_W 56_00_N_56_30_W 55_45_N_59_00_W 55_45_N_58_30_W 55_45_N_58_00_W 55_45_N_57_30_W 55_45_N_57_00_W 55_45_N_56_30_W 55_30_N_60_00_W 55_30_N_59_30_W 55_30_N_59_00_W 55_30_N_58_30_W 55_30_N_58_00_W 55_30_N_57_30_W 55_30_N_57_00_W 55_30_N_56_30_W 55_15_N_59_30_W 55_15_N_59_00_W 55_15_N_58_30_W 55_15_N_58_00_W 55_15_N_57_00_W 55_15_N_56_30_W 55_00_N_58_00_W 55_00_N_57_30_W 55_00_N_57_00_W 55_00_N_56_30_W 54_45_N_57_30_W 54_45_N_57_00_W 54_45_N_56_30_W 54_30_N_58_00_W 54_30_N_57_30_W 54_30_N_57_00_W 54_30_N_56_30_W 54_15_N_59_00_W 54_15_N_58_30_W 54_15_N_58_00_W 54_15_N_57_30_W 54_15_N_57_00_W 54_15_N_56_30_W 44_00_N_60_00_W 46_00_N_60_00_W 48_00_N_60_00_W 48_00_N_64_00_W 48_00_N_72_00_W 50_00_N_124_00_W 50_00_N_128_00_W 50_00_N_132_00_W 50_00_N_136_00_W 50_00_N_140_00_W 50_00_N_56_00_W 50_00_N_60_00_W 50_00_N_64_00_W 50_00_N_68_00_W 50_00_N_72_00_W 52_00_N_140_00_W 52_00_N_144_00_W 52_00_N_148_00_W 52_00_N_152_00_W 52_00_N_56_00_W 52_00_N_60_00_W 52_00_N_64_00_W 52_00_N_68_00_W 54_00_N_152_00_W 54_00_N_156_00_W 54_00_N_160_00_W 54_00_N_164_00_W 54_00_N_56_00_W 54_00_N_60_00_W 54_00_N_64_00_W 56_00_N_164_00_W 56_00_N_168_00_W 56_00_N_56_00_W 56_00_N_60_00_W 56_00_N_80_00_W 56_00_N_84_00_W 56_00_N_88_00_W 58_00_N_168_00_W 58_00_N_56_00_W 58_00_N_60_00_W 58_00_N_64_00_W 58_00_N_80_00_W 58_00_N_84_00_W 58_00_N_88_00_W 58_00_N_92_00_W 58_00_N_96_00_W 60_00_N_168_00_W 60_00_N_172_00_W 60_00_N_60_00_W 60_00_N_64_00_W 60_00_N_80_00_W 60_00_N_84_00_W 60_00_N_88_00_W 60_00_N_92_00_W 60_00_N_96_00_W 62_00_N_168_00_W 62_00_N_172_00_W 62_00_N_60_00_W 62_00_N_64_00_W 62_00_N_68_00_W 62_00_N_72_00_W 62_00_N_76_00_W 62_00_N_80_00_W 62_00_N_84_00_W 62_00_N_88_00_W 62_00_N_92_00_W 62_00_N_96_00_W 64_00_N_168_00_W 64_00_N_172_00_W 64_00_N_60_00_W 64_00_N_64_00_W 64_00_N_68_00_W 64_00_N_72_00_W 64_00_N_76_00_W 64_00_N_80_00_W 64_00_N_84_00_W 64_00_N_88_00_W 64_00_N_92_00_W 64_00_N_96_00_W 66_00_N_172_00_W 66_00_N_60_00_W 66_00_N_64_00_W 66_00_N_68_00_W 66_00_N_76_00_W 66_00_N_80_00_W 66_00_N_84_00_W 66_00_N_88_00_W 68_00_N_116_00_W 68_00_N_172_00_W 68_00_N_64_00_W 68_00_N_68_00_W 68_00_N_80_00_W 68_00_N_84_00_W 68_00_N_88_00_W 70_00_N_100_00_W 70_00_N_104_00_W 70_00_N_108_00_W 70_00_N_112_00_W 70_00_N_116_00_W 70_00_N_120_00_W 70_00_N_124_00_W 70_00_N_128_00_W 70_00_N_136_00_W 70_00_N_140_00_W 70_00_N_144_00_W 70_00_N_168_00_W 70_00_N_172_00_W 70_00_N_64_00_W 70_00_N_68_00_W 70_00_N_84_00_W 70_00_N_88_00_W 70_00_N_92_00_W 70_00_N_96_00_W 72_00_N_100_00_W 72_00_N_104_00_W 72_00_N_120_00_W 72_00_N_124_00_W 72_00_N_128_00_W 72_00_N_132_00_W 72_00_N_136_00_W 72_00_N_140_00_W 72_00_N_144_00_W 72_00_N_148_00_W 72_00_N_152_00_W 72_00_N_156_00_W 72_00_N_160_00_W 72_00_N_164_00_W 72_00_N_168_00_W 72_00_N_68_00_W 72_00_N_72_00_W 72_00_N_76_00_W 72_00_N_92_00_W 72_00_N_96_00_W 74_00_N_100_00_W 74_00_N_104_00_W 74_00_N_108_00_W 74_00_N_116_00_W 74_00_N_120_00_W 74_00_N_128_00_W 74_00_N_132_00_W 74_00_N_136_00_W 74_00_N_140_00_W 74_00_N_144_00_W 74_00_N_148_00_W 74_00_N_156_00_W 74_00_N_72_00_W 74_00_N_76_00_W 74_00_N_80_00_W 74_00_N_84_00_W 74_00_N_88_00_W 74_00_N_92_00_W 74_00_N_96_00_W 76_00_N_100_00_W 76_00_N_104_00_W 76_00_N_108_00_W 76_00_N_112_00_W 76_00_N_116_00_W 76_00_N_124_00_W 76_00_N_128_00_W 76_00_N_132_00_W 76_00_N_136_00_W 76_00_N_140_00_W 76_00_N_68_00_W 76_00_N_72_00_W 76_00_N_76_00_W 76_00_N_80_00_W 76_00_N_84_00_W 76_00_N_88_00_W 76_00_N_92_00_W 76_00_N_96_00_W 78_00_N_72_00_W 78_00_N_76_00_W 78_00_N_80_00_W 78_00_N_84_00_W 80_00_N_76_00_W 44_00_N_136_00_W 44_00_N_60_00_W 46_00_N_60_00_W 48_00_N_60_00_W 48_00_N_64_00_W 48_00_N_72_00_W 50_00_N_124_00_W 50_00_N_128_00_W 50_00_N_132_00_W 50_00_N_136_00_W 50_00_N_140_00_W 50_00_N_56_00_W 50_00_N_60_00_W 50_00_N_64_00_W 50_00_N_68_00_W 50_00_N_72_00_W 52_00_N_140_00_W 52_00_N_144_00_W 52_00_N_148_00_W 52_00_N_152_00_W 52_00_N_56_00_W 52_00_N_60_00_W 52_00_N_64_00_W 52_00_N_68_00_W 54_00_N_152_00_W 54_00_N_156_00_W 54_00_N_160_00_W 54_00_N_164_00_W 54_00_N_56_00_W 54_00_N_60_00_W 54_00_N_64_00_W 56_00_N_164_00_W 56_00_N_168_00_W 56_00_N_56_00_W 56_00_N_60_00_W 56_00_N_80_00_W 56_00_N_84_00_W 56_00_N_88_00_W 58_00_N_168_00_W 58_00_N_56_00_W 58_00_N_60_00_W 58_00_N_64_00_W 58_00_N_80_00_W 58_00_N_84_00_W 58_00_N_88_00_W 58_00_N_92_00_W 58_00_N_96_00_W 60_00_N_168_00_W 60_00_N_172_00_W 60_00_N_60_00_W 60_00_N_64_00_W 60_00_N_80_00_W 60_00_N_84_00_W 60_00_N_88_00_W 60_00_N_92_00_W 60_00_N_96_00_W 62_00_N_168_00_W 62_00_N_172_00_W 62_00_N_60_00_W 62_00_N_64_00_W 62_00_N_68_00_W 62_00_N_72_00_W 62_00_N_76_00_W 62_00_N_80_00_W 62_00_N_84_00_W 62_00_N_88_00_W 62_00_N_92_00_W 62_00_N_96_00_W 64_00_N_168_00_W 64_00_N_172_00_W 64_00_N_60_00_W 64_00_N_64_00_W 64_00_N_68_00_W 64_00_N_72_00_W 64_00_N_76_00_W 64_00_N_80_00_W 64_00_N_84_00_W 64_00_N_88_00_W 64_00_N_92_00_W 64_00_N_96_00_W 66_00_N_172_00_W 66_00_N_60_00_W 66_00_N_64_00_W 66_00_N_68_00_W 66_00_N_76_00_W 66_00_N_80_00_W 66_00_N_84_00_W 66_00_N_88_00_W 68_00_N_116_00_W 68_00_N_172_00_W 68_00_N_60_00_W 68_00_N_64_00_W 68_00_N_68_00_W 68_00_N_80_00_W 68_00_N_84_00_W 68_00_N_88_00_W 70_00_N_100_00_W 70_00_N_104_00_W 70_00_N_108_00_W 70_00_N_112_00_W 70_00_N_116_00_W 70_00_N_120_00_W 70_00_N_124_00_W 70_00_N_128_00_W 70_00_N_136_00_W 70_00_N_140_00_W 70_00_N_144_00_W 70_00_N_168_00_W 70_00_N_172_00_W 70_00_N_60_00_W 70_00_N_64_00_W 70_00_N_68_00_W 70_00_N_84_00_W 70_00_N_88_00_W 70_00_N_92_00_W 70_00_N_96_00_W 72_00_N_100_00_W 72_00_N_104_00_W 72_00_N_120_00_W 72_00_N_124_00_W 72_00_N_128_00_W 72_00_N_132_00_W 72_00_N_136_00_W 72_00_N_140_00_W 72_00_N_144_00_W 72_00_N_148_00_W 72_00_N_152_00_W 72_00_N_156_00_W 72_00_N_160_00_W 72_00_N_164_00_W 72_00_N_168_00_W 72_00_N_68_00_W 72_00_N_72_00_W 72_00_N_76_00_W 72_00_N_92_00_W 72_00_N_96_00_W 74_00_N_100_00_W 74_00_N_104_00_W 74_00_N_108_00_W 74_00_N_112_00_W 74_00_N_116_00_W 74_00_N_120_00_W 74_00_N_128_00_W 74_00_N_132_00_W 74_00_N_136_00_W 74_00_N_140_00_W 74_00_N_144_00_W 74_00_N_148_00_W 74_00_N_156_00_W 74_00_N_72_00_W 74_00_N_76_00_W 74_00_N_80_00_W 74_00_N_84_00_W 74_00_N_88_00_W 74_00_N_92_00_W 74_00_N_96_00_W 76_00_N_100_00_W 76_00_N_104_00_W 76_00_N_108_00_W 76_00_N_112_00_W 76_00_N_116_00_W 76_00_N_120_00_W 76_00_N_124_00_W 76_00_N_128_00_W 76_00_N_132_00_W 76_00_N_136_00_W 76_00_N_140_00_W 76_00_N_68_00_W 76_00_N_72_00_W 76_00_N_76_00_W 76_00_N_80_00_W 76_00_N_84_00_W 76_00_N_88_00_W 76_00_N_92_00_W 76_00_N_96_00_W 78_00_N_72_00_W 78_00_N_76_00_W 78_00_N_80_00_W 78_00_N_84_00_W 80_00_N_72_00_W 80_00_N_76_00_W 82_00_N_64_00_W 82_00_N_68_00_W 82_00_N_72_00_W 44_00_N_136_00_W 44_00_N_60_00_W 46_00_N_60_00_W 48_00_N_60_00_W 48_00_N_64_00_W 48_00_N_72_00_W 50_00_N_124_00_W 50_00_N_128_00_W 50_00_N_132_00_W 50_00_N_136_00_W 50_00_N_140_00_W 50_00_N_56_00_W 50_00_N_60_00_W 50_00_N_64_00_W 50_00_N_68_00_W 50_00_N_72_00_W 52_00_N_140_00_W 52_00_N_144_00_W 52_00_N_148_00_W 52_00_N_152_00_W 52_00_N_56_00_W 52_00_N_60_00_W 52_00_N_64_00_W 52_00_N_68_00_W 54_00_N_152_00_W 54_00_N_156_00_W 54_00_N_160_00_W 54_00_N_164_00_W 54_00_N_56_00_W 54_00_N_60_00_W 54_00_N_64_00_W 56_00_N_164_00_W 56_00_N_168_00_W 56_00_N_56_00_W 56_00_N_60_00_W 56_00_N_64_00_W 56_00_N_80_00_W 56_00_N_84_00_W 56_00_N_88_00_W 58_00_N_168_00_W 58_00_N_56_00_W 58_00_N_60_00_W 58_00_N_64_00_W 58_00_N_80_00_W 58_00_N_84_00_W 58_00_N_88_00_W 58_00_N_92_00_W 58_00_N_96_00_W 60_00_N_168_00_W 60_00_N_172_00_W 60_00_N_60_00_W 60_00_N_64_00_W 60_00_N_80_00_W 60_00_N_84_00_W 60_00_N_88_00_W 60_00_N_92_00_W 60_00_N_96_00_W 62_00_N_168_00_W 62_00_N_172_00_W 62_00_N_60_00_W 62_00_N_64_00_W 62_00_N_68_00_W 62_00_N_72_00_W 62_00_N_76_00_W 62_00_N_80_00_W 62_00_N_84_00_W 62_00_N_88_00_W 62_00_N_92_00_W 62_00_N_96_00_W 64_00_N_168_00_W 64_00_N_172_00_W 64_00_N_60_00_W 64_00_N_64_00_W 64_00_N_68_00_W 64_00_N_72_00_W 64_00_N_76_00_W 64_00_N_80_00_W 64_00_N_84_00_W 64_00_N_88_00_W 64_00_N_92_00_W 64_00_N_96_00_W 66_00_N_172_00_W 66_00_N_60_00_W 66_00_N_64_00_W 66_00_N_68_00_W 66_00_N_76_00_W 66_00_N_80_00_W 66_00_N_84_00_W 66_00_N_88_00_W 68_00_N_116_00_W 68_00_N_172_00_W 68_00_N_60_00_W 68_00_N_64_00_W 68_00_N_68_00_W 68_00_N_80_00_W 68_00_N_84_00_W 68_00_N_88_00_W 70_00_N_100_00_W 70_00_N_104_00_W 70_00_N_108_00_W 70_00_N_112_00_W 70_00_N_116_00_W 70_00_N_120_00_W 70_00_N_124_00_W 70_00_N_128_00_W 70_00_N_136_00_W 70_00_N_140_00_W 70_00_N_144_00_W 70_00_N_168_00_W 70_00_N_172_00_W 70_00_N_60_00_W 70_00_N_64_00_W 70_00_N_68_00_W 70_00_N_84_00_W 70_00_N_88_00_W 70_00_N_92_00_W 70_00_N_96_00_W 72_00_N_100_00_W 72_00_N_104_00_W 72_00_N_120_00_W 72_00_N_124_00_W 72_00_N_128_00_W 72_00_N_132_00_W 72_00_N_136_00_W 72_00_N_140_00_W 72_00_N_144_00_W 72_00_N_148_00_W 72_00_N_152_00_W 72_00_N_156_00_W 72_00_N_160_00_W 72_00_N_164_00_W 72_00_N_168_00_W 72_00_N_68_00_W 72_00_N_72_00_W 72_00_N_76_00_W 72_00_N_92_00_W 72_00_N_96_00_W 74_00_N_100_00_W 74_00_N_104_00_W 74_00_N_108_00_W 74_00_N_112_00_W 74_00_N_116_00_W 74_00_N_120_00_W 74_00_N_128_00_W 74_00_N_132_00_W 74_00_N_136_00_W 74_00_N_140_00_W 74_00_N_144_00_W 74_00_N_148_00_W 74_00_N_156_00_W 74_00_N_72_00_W 74_00_N_76_00_W 74_00_N_80_00_W 74_00_N_84_00_W 74_00_N_88_00_W 74_00_N_92_00_W 74_00_N_96_00_W 76_00_N_100_00_W 76_00_N_104_00_W 76_00_N_108_00_W 76_00_N_112_00_W 76_00_N_116_00_W 76_00_N_120_00_W 76_00_N_124_00_W 76_00_N_128_00_W 76_00_N_132_00_W 76_00_N_136_00_W 76_00_N_140_00_W 76_00_N_68_00_W 76_00_N_72_00_W 76_00_N_76_00_W 76_00_N_80_00_W 76_00_N_84_00_W 76_00_N_88_00_W 76_00_N_92_00_W 76_00_N_96_00_W 78_00_N_72_00_W 78_00_N_76_00_W 78_00_N_80_00_W 78_00_N_84_00_W 80_00_N_72_00_W 80_00_N_76_00_W 82_00_N_64_00_W 82_00_N_68_00_W 82_00_N_72_00_W