North Pole Environmental Observatory
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Polar Science Center, Applied Physics Laboratory, University of Washington, Seattle WA |
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Dr. Richard Moritz, email: dickm at apl.washington.edu |
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http://psc.apl.washington.edu/northpole/ |
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Upward Looking Sonar on bottom anchored moorings |
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North Pole |
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2001-2010 |
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Data were processed and calibrated by R. Moritz. Statistical summaries were computed and reformatted by R. Lindsay, from the point data. Additional details on the ULS instrument, calibration procedures, are presented in Drucker, R., S. Martin and R. Moritz. Observations of ice thickness and frazil ice in the St. Lawrence Island polynya from satellite imagery, upward looking sonar, and salinity/temperature moorings. J. Geophys. Res., 108 (C5), 2003, 18-1 - 18-18. V20140415: removed ULS 60, 2006-2008 due to unreliable data. |
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369490 point samples, 65 total months |
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2001-2002, 10 min, 2002-2003, 5 min, 2004-2005, 7 min, 2005-2006, 5 min preliminary, 2008-2010, 8 min |
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Box plots show the median (black bar) and the 5th, 25th, 75th, and 95th percentile values for each month. The colors show the month of the year. A * marks the mode.