| Summary: | The contributed data represents watercolumn backscatter data collected with a Simrad EK80 Wide-band Transceiver (WBT) transmitting through a Simrad ES18-11 scientific split-beam echosounder on the Icebreaker Oden during Petermann Glacier 2015 Expedition. The EK80 WBT was installed by UNH on the ODEN especially for this program. The data were collected over a band of approximately 16 - 26 kHz providing extremely high resolution imagery of the water column. The water-column data showed revealed a distinct mid-water scattering layer whose spatial distribution and presence and absence appears to be associated with the distribution and circulation of water masses in the region. Files are named according to the format: PETERMANN2015-{Date}-{Time}.raw. "PETERMANN2015" indicates that the measurements were taken during the Petermann Glacier 2015 Expedition. {Date} corresponds to the date that this 24-hour cycle of measurements concluded and {Time} is the number of hours, minutes, and seconds (in this format: HHMMSS) since this cycle of measurements began. For example, "PETERMANN2015-D20150806-T020343.raw" contains data recorded during the Petermann Glacier 2015 Expedition taken during the 2015-08-06 cycle 02:03:43 after the cycle began.
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