| Contributors | Affiliation | Role |
|---|---|---|
| Wiebe, Peter H. | Woods Hole Oceanographic Institution (WHOI) | Principal Investigator |
| Copley, Nancy | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
Metadata associated with the MOCNESS tows taken in the Red Sea near Economic City (ECDEEP), January 2014 including net opening and closing depth, volume filtered per net.
Three day trips were made aboard the R/V Thuwal to a location referred to as the Economic City Deep or ECDEEP: a ~700 m deep basin located north of KAUST at 22.5o N, 39.03o E). A 1/4-m MOCNESS (Multiple Opening/Closing Net and Environmental Sensing System; Wiebe et al., 1985) with 200 µm mesh nets was used to sample the zooplankton.
Field sampling: The MOCNESS was obliquely towed four times from the stern A-frame using 11.43 mm conducting cable to 600 m depth with a ship speed nominally of 2 kts (Fig. 2; Table 1). Two MOCNESS tows were taken during daytime, one each on 7 and 8 January 2014, and two night tows were taken on 12 January 2014. The first day tow (m-25-001) was equipped with 5 nets that sampled 600-400, 400-200, 200-100, and 100-0 m. The second day tow (m-25-002) and the two night tows (m-25-003, m-25-004) each had six nets that sampled 600-400, 400-200, 200-100, 100-50, and 50-0 m. The first tow was done without having GPS data input to the MOCNESS acquisition program, so positions from the bridge were obtained for the tow start and end, and at each opening of a net. GPS positions were logged for the other three tows. The MOCNESS system was equipped with the standard SeaBird temperature and conductivity probes. Volume of water filtered by each net was based on the net frame angle and flowmeter counts using equation 10b in Wiebe et al., 1985.
BCO-DMO Processing:
- added conventional header with dataset name, PI name, version date
- renamed parameters to BCO-DMO standard
- added columns: time_start_local, time_end_local, lat_start, lon_start, lat_end, lon_end
| File |
|---|
moc_meta.csv (Comma Separated Values (.csv), 2.20 KB) MD5:e17e19438a431b865bd90a717b01db64 Primary data file for dataset ID 625883 |
| Parameter | Description | Units |
| cruise_id | cruise identification | unitless |
| station | sequential station | unitless |
| tow | MOCNESS tow number | unitless |
| year | year | yyyy |
| month_local | local month | mm |
| day_local | local day | dd |
| yrday_local_start | local year-day at start tow | unitless |
| yrday_local_end | local year-day at end tow | unitless |
| lat_start | latitude at start of tow; north is positive | decimal degrees |
| lat_end | latitude at end of tow; north is positive | decimal degrees |
| lon_start | longitude at end of tow; east is positive | decimal degrees |
| lon_end | longitude at end of tow; east is positive | decimal degrees |
| net | net number | unitless |
| depth_open | depth at which net was opened | meters |
| depth_close | depth at which net was closeed | meters |
| vol_filt | volume of water filtered by net | cubic meter |
| Dataset-specific Instrument Name | MOCNESS-.25 m^2 |
| Generic Instrument Name | MOCNESS.25 |
| Dataset-specific Description | This MOCNESS sampled with either 5 or 6 nets, 200 micron mesh. |
| Generic Instrument Description | The Multiple Opening/Closing Net and Environmental Sensing System or MOCNESS is a family of net systems based on the Tucker Trawl principle. The MOCNESS-1/4 carries nine 1/4-m2 nets usually of 64 micrometer mesh and is used to sample the larger micro-zooplankton. |
| Website | |
| Platform | R/V Thuwal |
| Start Date | 2014-01-07 |
| End Date | 2015-01-12 |
| Description | Three day trips to sample krill at ECDEEP station near Economic City, Saudi Arabia, north of KAUST. |
The krill population at station ECDEEP was characterized via MOCNESS sampling and CTD casts.
| Funding Source | Award |
|---|---|
| King Abdullah University of Science and Technology (KAUST) |