| Contributors | Affiliation | Role |
|---|---|---|
| Van Dover, Cindy | The College of William & Mary | Chief Scientist |
| Ball, Bernard | Duke University Department of Biology (Duke - Bio) | Contact |
| Copley, Nancy | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
This alongtrack data set contains information on environmental conditions for each day of the RVOceanus cruise OC471-02.
Start: Depart Bridgetown, Barbados 05/17/2011
End: Arrive San Juan, Puerto Rico 05/20/2011
Further instrument information available at: R2R and at the WHOI cruise data archives.
| File |
|---|
OC471-02_underway.csv (Comma Separated Values (.csv), 1.22 MB) MD5:4b3da77aebc4068700e6e1e99cafbde2 Primary data file for dataset ID 521654 |
| Parameter | Description | Units |
| date | date (UTC) | mm/dd/yyyy |
| month | month | 1 to 12 |
| day | day | 1 to 31 |
| year | year | YYYY |
| yrday_gmt | GMT day and decimal time; as 326.5 for the 326th day of the year or November 22 at 1200 hours (noon) | unitless |
| ISO_DateTime_UTC | Date/Time (UTC) ISO-8601:2004(E) formatted | YYYY-mm-ddTHH:MM:SS |
| time | Time (UTC) | HH:MM:SS |
| depth_12 | Depth in meters obtained from the Knudsen 12 kHz channel; 4 meter transducer depth correction has been applied | meters |
| depth_35 | Depth in meters obtained from the Knudsen 3.5 kHz channel; 4 meter transducer depth correction has been applied | meters |
| temp_air_p | Air temperature from port side using WXT520 | degrees C |
| temp_air_s | Air temperature from starboard side using WXT520 | degrees C |
| press_bar_p | Barometric pressure from port side using WXT520 | hPa |
| press_bar_s | Barometric pressure from starboard side using WXT520 | hPa |
| press_bar | Barometric pressure obtained from primary source (WXTS520) | hPa |
| lat | Latitude; south is negative | decimal degrees |
| lon | Longitude; west is negative | decimal degrees |
| cond_ss_FSI | Sea surface conductivity from Falmouth Scientific TSG (OCM-S-212) | milli-Siemens/centimeter |
| temp_ss_FSI | Sea surface temperature from Falmouth Scientific TSG (OCM-S-212) | degrees C |
| precip_rate_IMET | Precipitation from the IMET precipitation sensor on the forward mast; 14.5m above the waterline | mm/hr |
| precip_rate_WXT | Precipitation from port side using WXT520 (WXTP_Rc) | mm/hr |
| cog | GPS course over ground | degrees |
| sog | GPS speed over ground | knots |
| rain_accum_p | Rain accumulation from port side using WXT520 | mm |
| rain_accum_s | Rain accumulation from starboard side using WXT520 | mm |
| rain_intensity_p | Rain intensity from port side using WXT520 | mm/h |
| rain_intensity_s | Rain intensity from starboard side using WXT520 | mm/h |
| humidity_p | Relative humidity from port side using WXT520 | percent |
| humidity_s | Relative humidity from starboard side using WXT520 | percent |
| wind_dir_r_p | Relative wind direction from port side using WXT520 | degrees |
| wind_dir_r_s | Relative wind direction from starboard side using WXT520 | degrees |
| wind_speed_r_p | Relative wind speed from port side using WXT520 | m/sec |
| wind_speed_r_s | Relative wind speed from starboard side using WXT520 | m/sec |
| humidity | Relative humidity obtained from primary source (WXTS520) | percent |
| cond_ss_SBE | Surface conductivity from SBE45 | mS/cm |
| sal_ss_SBE | Sea surface salinity from SeaBird-45 | psu |
| temp_ss_SBE | Sea surface temperature from SeaBird-45 | degrees C |
| flvolt_SBE | Fluorescence from SeaBird-45 | milliVolts |
| temp_ss_SBE48 | Sea surface temperature from SeaBird-48 | degrees C |
| sal | Salinity calculated from FSI sea surface temperature and conductivity data values in accordance with UNESCO 44 | psu |
| cond_ss_FSI_2 | Falmouth Scientific TSG (OCM-S-212) sea surface conductivity | mmho/cm or milli-Siemens/centimeter |
| flvolt | Sea surface temperature Fluorescence | milliVolts |
| temp_ss_FSI_2 | Falmouth Scientific TSG (OTM-S-212) sea surface temperature | degrees C |
| head | Ship's heading obtained from primary true heading source (ship's gyro) | degrees |
| speed | Ship speed in knots extracted from EDO Speedlog VHW data string | knots |
| radiation_s | Short wave radiation | watts/square meter |
| wind_dir_c_p | True wind direction from port side | degrees |
| wind_dir_c_s | True wind direction from starboard side | degrees |
| wind_dir_c | True wind direction from primary source (WXTS520); corrected for ship motion in degrees; using meteorologic convention of 'from' not 'to' | degrees |
| wind_speed_c_p | True wind speed from port side | m/s |
| wind_speed_c_s | True wind speed from starboard side | m/s |
| wind_speed_kts | True wind speed in knots | knots |
| Dataset-specific Instrument Name | GPS |
| Generic Instrument Name | Global Positioning System Receiver |
| Generic Instrument Description | The Global Positioning System (GPS) is a U.S. space-based radionavigation system that provides reliable positioning, navigation, and timing services to civilian users on a continuous worldwide basis. The U.S. Air Force develops, maintains, and operates the space and control segments of the NAVSTAR GPS transmitter system. Ships use a variety of receivers (e.g. Trimble and Ashtech) to interpret the GPS signal and determine accurate latitude and longitude. |
| Dataset-specific Instrument Name | IMET |
| Generic Instrument Name | Improved Meteorological Recorder |
| Generic Instrument Description | An IMET Recorder is an instrument package that can be mounted on a ship or buoy to record mean weather data including air and sea-surface temperature, incoming short and long-wave radiation, precipitation, humidity, wind velocity and barometric pressure. Each sensor in the system communicates digitally and returns calibrated values to a central data recorder. |
| Dataset-specific Instrument Name | MicroTSG |
| Generic Instrument Name | MicroTSG Thermosalinograph |
| Dataset-specific Description | SBE-45 |
| Generic Instrument Description | An externally powered, high-accuracy instrument, designed for shipboard determination of sea surface (pumped-water) conductivity and temperature. Salinity and sound velocity can also be computed. |
| Dataset-specific Instrument Name | SBE48 |
| Generic Instrument Name | Sea-Bird SBE 48 Hull Temperature Sensor |
| Generic Instrument Description | The SBE 48 is a high-accuracy temperature recorder with non-volatile memory, designed for shipboard determination of sea surface temperature. Installed with magnets just below the water line, the SBE 48's temperature sensor is in contact with the inside of the ship's hull. For more information, see the SBE48 Manual. |
| Dataset-specific Instrument Name | WXT520 |
| Generic Instrument Name | Weather Transmitter |
| Generic Instrument Description | The ship-mounted Vaisala Weather Transmitter WXT520 measures: Wind speed and direction; Liquid precipitation: rainfall, duration, intensity; Barometric pressure; Air temperature and Relative humidity. (for more information see http://www.vaisala.com/en/products/multiweathersensors/Pages/WXT520.aspx) |
| Website | |
| Platform | R/V Oceanus |
| Report | |
| Start Date | 2011-05-17 |
| End Date | 2011-05-20 |
| Description | cruise for SEEPC project.
Cruise information and original data are available from the NSF R2R data catalog.
Science Objectives (from Cruise Planning Synopsis):
Preliminary science activities at 3 Barbados seep sites (El Pilar, Orenoque A, Orenoque B) on the accretionary wedge for return visit to sites with DSRV Alvin in May-June 2012. Part of the Seep Connectivity Project funded by NSF to investigate historical and contemporary linkages among Barbados, Gulf OF MExico, and Blake Ridge seep species.
Science Activities
At each site:
1) Sub-bottom profiling to locate seep areas
2) MOCNESS tow for larval sampling
3) Deep-water (35 m HOB) mooring deployment (current meter, 2 sediment/larval traps per mooring)
4) Bone/wood package deployment |
This project will evaluate connectivity on spatial scales that match those at which vent systems are being studied (3500 km), with a set of nested seeps (within the Barbados system) within which connectivity can be explored at more local spatial scales (30 to 130 km), and with species that span depth (600 m to 3600 m) and geographic ranges (30 km to 3500 km) and that have diverse life-history characteristics. Five deep-sea seep systems in the Intra- American Sea (IAS) are targeted: Blake Ridge, Florida Escarpment, Alaminos Canyon, Brine Pool, Barbados (El Pilar, Orenoque A, Orenoque B). The primary objective is to advance our general knowledge of connectivity in the deep sea. The focus is on species and processes occurring in the IAS, with attention to oceanographic circulation, life histories, and genetics. Questions that apply in shallow-water systems motivate this study:
1. What phylogeographic breaks occur in the system? It is important to distinguish between phylogeographic history and connectivity. A phylogeographic break with no shared alleles between populations implies a long history of isolation or possibly cryptic speciation.
2. Are populations connected by ongoing migration? This is the fundamental question about connectivity and the scale of genetic variation in marine species with planktonic larvae.
3. What biophysical processes underlie observed connectivities? Biological processes (e.g., larval distributions in the water column, timing of reproduction, and planktonic larval duration) and physical processes of transport and dispersion interact to determine connectivity.
The oceanographic model for the IAS will be improved and coupled to a Lagrangian larval transport model. The field program includes time-series sampling of larvae at seeps with records of current velocities, water column sampling to determine larval distribution potential, shipboard studies of larval biology and behavior, and sampling of benthic target species. Phylogenetic and population genetic tools will be used to explore historical and contemporary gene flow. Iterative interactions among the science teams will advance our understanding of connectivity in the deep sea and to develop effective and best methods for hypothesis testing under the constraints of working in a relatively inaccessible environment. Since their discovery, deep-sea chemosynthetic ecosystems have been novel systems within which to test the generality of paradigms developed for shallow-water species. This study will explore scale-dependent biodiversity and recruitment dynamics in deep-sea seep communities, and will identify key factors underlying population persistence and maintenance of biodiversity in these patchy systems.
Google Earth map showing positions of stations, CTD, XBT, multibeam locations (KMZ file dlownload)
| Funding Source | Award |
|---|---|
| NSF Division of Ocean Sciences (NSF OCE) |