BODC Cruise Metadata Report for RRS Discovery cruise DY077
Introduction
This report collates information from the BODC cruise inventory and oceanographic databases. It presents
- Cruise Inventory Information
- A summary of BODC data holdings for the cruise from the
- References - including cruise tracks and cruise reports
Cruise Inventory Information
| Long name | RRS Discovery cruise DY077 |
|---|---|
| Short name | DY077 |
| Objectives and Narrative | The oceanic water column and the underlying seabed change on a variety of temporal and spatial scales. The objective of the Porcupine Abyssal Plain Sustained observatory is to provide high temporal resolution (hours) of an increasing number of variables which are relevant from the perspective of the biology, physics and chemistry over a relatively small spatial scale (30km). The site has been under examination for over 20 years and during that time, substantial changes have been observed in the benthic environment. The intention is to sustain and enhance these observations in order that a deeper understanding is obtained into the processes which operate; in particular the responses to the changes which are currently taking place in the global environment. The objective of the cruise was primarily to service the infrastructure required for continuous sustained observation, and to put these into context using observations from the ship which as yet cannot be carried out autonomously. In parallel to maintaining and extending exisiting measurements, the over view was enhanced by parallel research into comparing methods of drifting sediment traps and collection of marine aggregates along with studies of the abundance, distribution of and composition of those aggregates. These investigations were carried out using a multi instrument observational approach combined with direct sampling. In addition the cruise achieved sampling of the abyssal plain seabed and its fauna via coring, trawling, and baited traps, and left in place a time-lapse camera system for extended (1-year) seafloor observation. |
| Ship | RRS Discovery |
| Departure Port | Southampton, United Kingdom |
| Departure Date | 2017-04-14 |
| Arrival Port | Southampton, United Kingdom |
| Arrival Date | 2017-05-01 |
| Principal Scientist(s) | Richard Stephen Lampitt (National Oceanography Centre, Southampton) |
| Responsible Organisation | University of Leeds Department of Earth Sciences |
| Associated Project(s) | Porcupine Abyssal Plain deep ocean observatory |
| IHB Sea Areas Visited | North East Atlantic Ocean (limit 40W) |
| Marsden Squares Visited | 146 |
| Work Area Description | Porcupine Abyssal Plain |
| Work Area Bounding Polygon | 40N,20W; 50N,20W; 50N,10W; 40N,10W; 40N,20W |
| Southern Limit | 40N |
| Northern Limit | 50N |
| Western Limit | 20W |
| Eastern Limit | 10W |
Cruise Inventory Datasets
| Physical oceanography | |
|---|---|
| CTD stations |
Quantity:
number of profiles =
23
Description: CTD measurements of pressure, salinity, temperature, oxygen, chlorophyll, plus water samples from some CTDs for chlorophyll, oxygen, salinity, DIC and Ammonia |
| Biology and fisheries | |
| Crustaceans |
Quantity:
number of hauls =
2
Description: Otter trawl samples of megabenthos |
| Demersal fish |
Quantity:
number of hauls =
2
Description: Otter trawl samples of megabenthos |
| Molluscs |
Quantity:
number of hauls =
2
Description: Otter trawl samples of megabenthos |
| Other biological/fisheries measurement |
Quantity:
number of stations =
3
Description: SAPS microplastics, ammonium, POC PA |
| Particulate organic matter (inc POC, PON) |
Quantity:
number of stations =
2
Description: In situ in-line Hologram water column profiles, (0-250m); Biogeochemical analysis |
| Particulate organic matter (inc POC, PON) |
Quantity:
number of stations =
3
Description: SAPS microplastics, ammonium, POC PA |
| Particulate organic matter (inc POC, PON) |
Quantity:
number of stations =
10
Description: Snowcatcher water samples analysed for particle size and sinking speed |
| Zoobenthos |
Quantity:
number of stations =
10
Description: Multiple sediment cores for various analyses |
| Zoobenthos |
Quantity:
number of hauls =
2
Description: Otter trawl samples of megabenthos |
| Zooplankton |
Quantity:
number of stations =
5
Description: WP2, plankton net, 200µm, to 200m, 3 x midnight, 3 x noon |
Cruise Inventory Mooring/Buoy Operations
| Latitude | Longitude | Data type | Description |
|---|---|---|---|
| 49° 0' N | 16° 24' W | Bottom photography | Time-lapse camera deployment |
| 49° 3' N | 16° 18' W | Carbon dioxide | PAP1 Longterm Observatory Deployment |
| 49° 2' N | 16° 20' W | Carbon dioxide | PAP1 Longterm Observatory Recovery |
| 49° 0' N | 16° 25' W | Crustaceans | 2 x amphipod trap deployment recovery |
| 49° 0' N | 16° 28' W | Current meters | PAP3 deepwater sediment traps Deployment |
| 49° 0' N | 16° 29' W | Current meters | PAP3 deepwater sediment traps Recovery |
| 49° 3' N | 16° 20' W | Neutrally buoyant floats | Marine Snow Catcher |
| 48° 58' N | 16° 21' W | Neutrally buoyant floats | PELAGRA traps |
| 49° 3' N | 16° 18' W | Nitrate | PAP1 Longterm Observatory Deployment |
| 49° 2' N | 16° 20' W | Nitrate | PAP1 Longterm Observatory Recovery |
| 49° 3' N | 16° 18' W | Optics (eg underwater light levels) | PAP1 Longterm Observatory Deployment |
| 49° 2' N | 16° 20' W | Optics (eg underwater light levels) | PAP1 Longterm Observatory Recovery |
| 49° 3' N | 16° 18' W | Oxygen | PAP1 Longterm Observatory Deployment |
| 49° 2' N | 16° 20' W | Oxygen | PAP1 Longterm Observatory Recovery |
| 49° 0' N | 16° 28' W | Oxygen | PAP3 deepwater sediment traps Deployment |
| 49° 0' N | 16° 29' W | Oxygen | PAP3 deepwater sediment traps Recovery |
| 49° 3' N | 16° 18' W | Primary productivity | PAP1 Longterm Observatory Deployment |
| 49° 2' N | 16° 20' W | Primary productivity | PAP1 Longterm Observatory Recovery |
| 49° 3' N | 16° 20' W | Sediment traps | Marine Snow Catcher |
| 49° 3' N | 16° 20' W | Sediment traps | NBST tethered traps |
| 49° 0' N | 16° 28' W | Sediment traps | PAP3 deepwater sediment traps Deployment |
| 49° 0' N | 16° 29' W | Sediment traps | PAP3 deepwater sediment traps Recovery |
| 48° 58' N | 16° 21' W | Sediment traps | PELAGRA traps |
| 49° 3' N | 16° 20' W | Surface drifters/drifting buoys | NBST tethered traps |
| 49° 0' N | 16° 25' W | Zoobenthos | 2 x amphipod trap deployment recovery |
| 49° 0' N | 16° 24' W | Zoobenthos | Time-lapse camera deployment |
| 49° 3' N | 16° 18' W | Zooplankton | PAP1 Longterm Observatory Deployment |
| 49° 2' N | 16° 20' W | Zooplankton | PAP1 Longterm Observatory Recovery |
| 49° 3' N | 16° 18' W | pH | PAP1 Longterm Observatory Deployment |
| 49° 2' N | 16° 20' W | pH | PAP1 Longterm Observatory Recovery |
Summary of BODC Data Holdings for the Cruise
National Oceanographic Database
Summary
| # Series | Instrument Description | Parameters |
|---|---|---|
| 7 | Bottle station |
Dissolved oxygen parameters in the water column Quality control flags Reference numbers Vertical spatial coordinates |
| 22 | CTD/STD cast |
Chlorophyll pigment concentrations in water bodies Density of the water column Dissolved oxygen parameters in the water column Electrical conductivity of the water column Optical backscatter Salinity of the water column Temperature of the water column Transmittance and attenuance of the water column Vertical spatial coordinates Visible waveband radiance and irradiance measurements in the water column |
| 1 | Fluorometers |
Chlorophyll pigment concentrations in water bodies Concentration of suspended particulate material in the water column Date and time Reference numbers Temperature of the water column Vertical spatial coordinates |
| 1 | In-situ nutrient analyser |
Date and time Nitrate concentration parameters in the water column Reference numbers |
| 1 | Meteorological data logger |
Air pressure Air temperature Atmospheric humidity Date and time Horizontal spatial co-ordinates Raw light meter output Solar Radiation Visible waveband radiance and irradiance measurements in the atmosphere Wind strength and direction |
| 1 | Multiple instrument types |
Chlorophyll pigment concentrations in water bodies Date and time Electrical conductivity of the water column Horizontal spatial co-ordinates Metadata parameters Raw fluorometer output Raw suspended particulate material concentration sensor output Salinity of the water column Temperature of the water column Transmittance and attenuance of the water column |
| 1 | Single-beam echosounder |
Bathymetry and Elevation Date and time Horizontal platform movement Horizontal spatial co-ordinates Platform or instrument orientation |
Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)
Full List
| BODC Reference | Instrument Description | Date/Time | Location | |
|---|---|---|---|---|
| 1816715 | CTD/STD cast | 2017-04-16 20:39Z | 49° 3' N, 16° 20' W | Click for more |
| 1816727 | CTD/STD cast | 2017-04-16 22:27Z | 49° 3' N, 16° 20' W | Click for more |
| 1816739 | CTD/STD cast | 2017-04-17 00:34Z | 49° 3' N, 16° 20' W | Click for more |
| 1816740 | CTD/STD cast | 2017-04-19 09:02Z | 48° 59' N, 16° 19' W | Click for more |
| 1816752 | CTD/STD cast | 2017-04-19 12:22Z | 48° 57' N, 16° 25' W | Click for more |
| 1816764 | CTD/STD cast | 2017-04-19 15:19Z | 49° 1' N, 16° 25' W | Click for more |
| 1816776 | CTD/STD cast | 2017-04-20 22:11Z | 48° 58' N, 16° 28' W | Click for more |
| 1816788 | CTD/STD cast | 2017-04-21 05:22Z | 49° 7' N, 16° 37' W | Click for more |
| 1816807 | CTD/STD cast | 2017-04-21 08:55Z | 49° 11' N, 16° 42' W | Click for more |
| 1816819 | CTD/STD cast | 2017-04-21 12:35Z | 49° 12' N, 16° 34' W | Click for more |
| 1816820 | CTD/STD cast | 2017-04-22 16:26Z | 48° 50' N, 16° 31' W | Click for more |
| 1816832 | CTD/STD cast | 2017-04-23 12:04Z | 49° 0' N, 16° 24' W | Click for more |
| 1816844 | CTD/STD cast | 2017-04-24 12:39Z | 48° 56' N, 16° 15' W | Click for more |
| 1816856 | CTD/STD cast | 2017-04-24 15:47Z | 48° 56' N, 16° 15' W | Click for more |
| 1816868 | CTD/STD cast | 2017-04-24 17:46Z | 49° 0' N, 16° 22' W | Click for more |
| 1816881 | CTD/STD cast | 2017-04-24 19:37Z | 48° 54' N, 16° 24' W | Click for more |
| 1816893 | CTD/STD cast | 2017-04-25 14:22Z | 48° 59' N, 16° 24' W | Click for more |
| 1816900 | CTD/STD cast | 2017-04-26 12:01Z | 48° 52' N, 16° 35' W | Click for more |
| 1816912 | CTD/STD cast | 2017-04-26 14:56Z | 48° 54' N, 16° 42' W | Click for more |
| 1816924 | CTD/STD cast | 2017-04-26 18:01Z | 48° 49' N, 16° 42' W | Click for more |
| 1816936 | CTD/STD cast | 2017-04-28 08:48Z | 48° 47' N, 16° 46' W | Click for more |
| 1816948 | CTD/STD cast | 2017-04-28 10:57Z | 48° 45' N, 16° 40' W | Click for more |
| 1836790 | Single-beam echosounder | 2017-04-14 08:33Z to 2017-05-01 07:08Z | 48° 40' N to 50° 53' N; 16° 57' W to 1° 17' W | Click for more |
| 1836808 | Meteorological data logger | 2017-04-14 08:33Z to 2017-05-01 07:08Z | 48° 40' N to 50° 53' N; 16° 57' W to 1° 17' W | Click for more |
| 1836821 | Multiple instrument types | 2017-04-14 08:33Z to 2017-05-01 07:08Z | 48° 40' N to 50° 53' N; 16° 57' W to 1° 17' W | Click for more |
| 1874343 | Bottle station | 2017-04-16 20:52Z | 49° 3' N, 16° 20' W | Click for more |
| 1874355 | Bottle station | 2017-04-17 02:51Z | 49° 3' N, 16° 20' W | Click for more |
| 1874367 | Bottle station | 2017-04-19 09:18Z | 48° 59' N, 16° 19' W | Click for more |
| 1874379 | Bottle station | 2017-04-19 12:47Z | 48° 57' N, 16° 25' W | Click for more |
| 1874380 | Bottle station | 2017-04-21 00:03Z | 48° 58' N, 16° 28' W | Click for more |
| 1874392 | Bottle station | 2017-04-22 16:49Z | 48° 50' N, 16° 31' W | Click for more |
| 1874411 | Bottle station | 2017-04-25 15:06Z | 48° 59' N, 16° 24' W | Click for more |
| 1922851 | Fluorometers | 2017-04-18 16:11Z to 2018-05-23 12:51Z | 49° 3' N, 16° 18' W | Click for more |
| 1922863 | In-situ nutrient analyser | 2017-04-18 00:20Z to 2017-05-15 02:41Z | 49° 3' N, 16° 18' W | Click for more |
Project Database
| # Events | Gear Type | Parameters Held |
|---|---|---|
| 22 | CTD frame plus rosette sampler |
Salinity of the water column Dissolved oxygen parameters in the water column |
| 1 | Instrument mooring |
Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)
