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Event log of instrument deployments and significant events from NBP1801 cruise from December 16th, 2017 to March 3rd, 2018.
During the Nathaniel B. Palmer cruise (NBP1801) from December 16th, 2017 to March 3rd, 2018 various sampling devices were employed including CTDs, gliders, plankton tows, McLane pumps, IKM trawls, and net tows.
This event log provides a chronological record of scientific sampling events and deployments. It can help integrate observations from the myriad of instruments and delineate the relative timing between events.
Problem report: Multiple users contributed information to the event log, so there are a few instances of incomplete data, typically on unusual deployments. For example, there are some blanks due to lack of log data during sediment trap recovery and trawl deployments.
BCO-DMO processing - converted latitude and longitude to decimal degrees (from degrees, decimal mins) - converted Date to YMD format - added conventional header with dataset name, PI name, version date - modified parameter names to conform with BCO-DMO naming conventions
A bucket used to collect surface sea water samples.
The Sea-Bird SBE 911 plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911 plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 plus and SBE 11 plus is called a SBE 911 plus. The SBE 9 plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 plus and SBE 4). The SBE 9 plus CTD can be configured with up to eight auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). more information from Sea-Bird Electronics
Drifting buoys are free drifting platforms with a float or buoy that keep the drifter at the surface and underwater sails or socks that catch the current. These instruments sit at the surface of the ocean and are transported via near-surface ocean currents. They are not fixed to the ocean bottom, therefore they "drift" with the currents. For this reason, these instruments are referred to as drifters, or drifting buoys.
The surface float contains sensors that measure different parameters, such as sea surface temperature, barometric pressure, salinity, wave height, etc. Data collected from these sensors are transmitted to satellites passing overhead, which are then relayed to land-based data centers.
definition sources: https://mmisw.org/ont/ioos/platform/drifting_buoy and https://www.aoml.noaa.gov/phod/gdp/faq.php#drifter1
A trawl with a pentagonal mouth opening and a dihedral depressor vane as part of the mouth opening. IKMTs come in various dimensions (refer to individual dataset documentation).
The original IKMTs were 10 foot (304 cm) and 15 foot (457 cm) at the mouth. The 10 foot IKMT net was 31 feet (9.45 m) in length (Wiebe and Benfield 2003).
McLane pumps sample large volumes of seawater at depth. They are attached to a wire and lowered to different depths in the ocean. As the water is pumped through the filter, particles suspended in the ocean are collected on the filters. The pumps are then retrieved and the contents of the filters are analyzed in a lab.
A Plankton Net is a generic term for a sampling net that is used to collect plankton. It is used only when detailed instrument documentation is not available.
PRR (Underwater): Biospherical Instruments PRR-800 PRR (Mast): Biospherical Instruments PRR-810
Radiometer is a generic term for a range of instruments used to measure electromagnetic radiation (radiance and irradiance) in the atmosphere or the water column. For example, this instrument category includes free-fall spectral radiometer (SPMR/SMSR System, Satlantic, Inc), profiling or deck cosine PAR units (PUV-500 and 510, Biospherical Instruments, Inc). This is a generic term used when specific type, make and model were not specified.
Sediment traps are specially designed containers deployed in the water column for periods of time to collect particles from the water column falling toward the sea floor. In general a sediment trap has a jar at the bottom to collect the sample and a broad funnel-shaped opening at the top with baffles to keep out very large objects and help prevent the funnel from clogging. This designation is used when the specific type of sediment trap was not specified by the contributing investigator.
Trace metal (TM) clean rosette bottle used for collecting trace metal clean seawater samples.
Latitude of sampling
Longitude of sampling
Name of Sampling event
Notes
Number of sampling event
Operator
Start date of sampling event in UTC
Start time of sampling event
Station
Type of sampling event
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