http://lod.bco-dmo.org/id/dataset/738001 eng; USA utf8 dataset Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project Biological and Chemical Oceanography Data Management Office (BCO-DMO) Unavailable 508-289-2009 WHOI MS#36 Woods Hole MA 02543 USA info@bco-dmo.org http://www.bco-dmo.org Monday - Friday 8:00am - 5:00pm For questions regarding this resource, please contact BCO-DMO via the email address provided. pointOfContact 2018-06-04 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) CTD log at the oxygen deficient zone of the Eastern Tropical North Pacific (ETNP) for RV/Atlantis cruise AT37-12, April-May 2017 2018-06-04 publication 2018-06-04 revision Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA) 2019-12-09 publication https://doi.org/10.1575/1912/bco-dmo.738001.1 Stefan M. Sievert Woods Hole Oceanographic Institution principalInvestigator Andrew R. Babbin Massachusetts Institute of Technology principalInvestigator Biological and Chemical Oceanography Data Management Office (BCO-DMO) Unavailable 508-289-2009 WHOI MS#36 Woods Hole MA 02543 USA info@bco-dmo.org http://www.bco-dmo.org Monday - Friday 8:00am - 5:00pm For questions regarding this resource, please contact BCO-DMO via the email address provided. publisher Cite this dataset as: Sievert, S., Babbin, A. (2018) CTD log at the oxygen deficient zone of the Eastern Tropical North Pacific (ETNP) for RV/Atlantis cruise AT37-12, April-May 2017. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2018-06-04 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.738001.1 [access date] Dataset Description: &lt;p&gt;A total of 10 CTD casts were performed on AT37-12 focusing on sampling the waters of the oxygen deficient zone of the Eastern Tropical North Pacific (ETNP). Cast 7 could not be completed due to problems with the wire. This dataset reports the station, date, location, water depth and sampling depth of individual Niskin bottles.&lt;/p&gt; Methods and Sampling: Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1559198 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1559198 Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1559042 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1559042 completed Stefan M. Sievert Woods Hole Oceanographic Institution 508 289 2305 Biology Department Watson Bldg. MS #52 Woods Hole MA 02543 USA ssievert@whoi.edu pointOfContact Andrew R. Babbin Massachusetts Institute of Technology 617-253-2181 77 Massachusetts Ave. Bldg. 54-918 Cambridge MA 02139 USA babbin@mit.edu pointOfContact asNeeded Dataset Version: 1 Unknown Station Date Lat Lon Btm_depth Niskin Btl_Depth CTD Sea-Bird rosette as part of R/V Atlantis theme None, User defined station number date latitude longitude depth_w bottle depth featureType BCO-DMO Standard Parameters CTD - profiler instrument BCO-DMO Standard Instruments AT37-12 service Deployment Activity East Pacific Rise vent area place Locations otherRestrictions otherRestrictions Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use. Collaborative Research: Environmental Drivers of Chemoautotrophic Carbon Production at Deep-Sea Hydrothermal Vents - Comparative Roles of Oxygen and Nitrate https://osprey.bco-dmo.org/project/685773 Collaborative Research: Environmental Drivers of Chemoautotrophic Carbon Production at Deep-Sea Hydrothermal Vents - Comparative Roles of Oxygen and Nitrate <p><em>NSF award abstract:</em></p> <p>Deep-sea hydrothermal vents, first discovered in 1977, are exemplary ecosystems where microbial chemosynthesis rather than photosynthesis is the primary source of organic carbon. Chemosynthetic microorganisms use the energy generated by oxidizing reduced inorganic chemicals contained in the vent fluids, like hydrogen sulfide or hydrogen gas, to convert carbon dioxide (CO2) into cell material. By doing so, they effectively transfer the energy from a geothermal source to higher trophic levels, in the process supporting the unique and fascinating ecosystems that are characterized by high productivity - oases in the otherwise barren deep ocean landscape. While the general view of the functioning of these ecosystems is established, there are still major gaps in our understanding of the microbiology and biogeochemistry of these systems. Particularly lacking are studies measuring rates of microbial activity in situ, which is ultimately needed to understand production of these ecosystems and to assess their impact on global biogeochemical cycles. This project makes use of the Vent-Submersible Incubation Device (Vent-SID), a robotic micro-laboratory that was recently developed and tested in the field. This instrument makes it possible for the first time to determine rates of carbon fixation at both in situ pressures and temperatures, revolutionizing the way we conduct microbial biogeochemical investigations at deep-sea hydrothermal vents. This is an interdisciplinary and collaborative effort between two US and foreign institutions, creating unique opportunities for networking and to foster international collaborations. This will also benefit two graduate students working in the project, who will get exposed to a wide range of instrumentation and scientific fields, facilitating their interdisciplinary education. In collaboration with Dr. Nitzan Resnick, academic dean of The Sage School, an elementary school outreach program will be developed and a long-term partnership with the school established. Further, a cruise blog site to disseminate the research to schools and the broader public will be set up. The results will be the topic of media coverage as well as be integrated into coursework and webpages existing either in the PI's labs or at the institution.</p> <p>This project is using a recently developed robotic micro-laboratory, the Vent-SID, to measure rates of chemoautotrophic production and to determine the relative importance of oxygen and nitrate in driving chemosynthesis at deep-sea hydrothermal vents at in situ pressures and temperatures and to tackle the following currently unresolved science objectives: 1) obtain in situ rates of chemoautotrophic carbon fixation, 2) obtain in situ nitrate reduction rate measurements, and 3) directly correlate the measurement of these processes with the expression of key genes involved in carbon and energy metabolism. Although recent data suggests that nitrate reduction either to N2 (denitrification) or to NH4+ (dissimilatory reduction of nitrate to ammonium) might be responsible for a significant fraction of chemoautotrophic production, NO3-reduction rates have never been measured in situ at hydrothermal vents. The researchers hypothesize that chemoautrophic growth is strongly coupled to nitrate respiration in vent microbial communities. During a cruise that will take place approximately 12 months into the project (~Feb 2017), the researchers will carry out a total of 4 deployments of the Vent-SID as well as ancillary sampling collection at the 9°46N to 9°53N segment of the East Pacific Rise. They will focus efforts on two diffuse-flow vent sites, "Crab Spa" and "Teddy Bear". "Crab Spa" is a diffuse flow vent site (T: 25°C) that has been used as a model system to gain insights into chemoautotrophic processes and has been frequently sampled over the last several years. This vent site has been very well characterized, both geochemically and microbiologically, providing excellent background data for the proposed process oriented studies. "Teddy Bear" is a diffuse-flow site that was discovered in Jan 2014, and it has a lower temperature (T: 12°C), making it a good comparative site. The researchers will perform a number of short duration time-course incubations to assess the role of different environmental parameters that have been identified as likely key variables (e.g., O2, temperature, NO3-), and to link these process rate measurements to the expression of functional genes using metatranscriptomic analyses. This study will be the first attempt to measure critical metabolic processes of hydrothermal vent microbial assemblages under critical in situ conditions and to assess the quantitative importance of electron donor and acceptor pathways in situ. In the future, it is envisioned that the Vent-SID will become a routine application by the oceanographic community for measuring time series rates of relevant metabolic processes at hydrothermal vents under in situ pressures and vent fluid temperatures.</p> vent O2 NO3 roles largerWorkCitation project eng; USA oceans East Pacific Rise vent area -104.3462 -89.9996 9.34142 14.03048 2017-04-24 2017-05-15 Deep-Sea hydrothermal vent field at 9 deg N on the East Pacific Rise 0 BCO-DMO catalogue of parameters from CTD log at the oxygen deficient zone of the Eastern Tropical North Pacific (ETNP) for RV/Atlantis cruise AT37-12, April-May 2017 Biological and Chemical Oceanography Data Management Office (BCO-DMO) Unavailable 508-289-2009 WHOI MS#36 Woods Hole MA 02543 USA info@bco-dmo.org http://www.bco-dmo.org Monday - Friday 8:00am - 5:00pm For questions regarding this resource, please contact BCO-DMO via the email address provided. pointOfContact http://lod.bco-dmo.org/id/dataset-parameter/738009.rdf Name: Station Units: unitless Description: <p>station identifier</p> http://lod.bco-dmo.org/id/dataset-parameter/738010.rdf Name: Date Units: unitless Description: <p>cast date, formatted as m/d/yyyy.</p> http://lod.bco-dmo.org/id/dataset-parameter/738011.rdf Name: Lat Units: decimal degrees Description: <p>latitude; north is positive</p> http://lod.bco-dmo.org/id/dataset-parameter/738012.rdf Name: Lon Units: decimal degrees Description: <p>longitude; east is positive</p> http://lod.bco-dmo.org/id/dataset-parameter/738013.rdf Name: Btm_depth Units: meters Description: <p>bottom depth</p> http://lod.bco-dmo.org/id/dataset-parameter/738014.rdf Name: Niskin Units: unitless Description: <p>Niskin bottle number</p> http://lod.bco-dmo.org/id/dataset-parameter/738015.rdf Name: Btl_Depth Units: meters Description: <p>bottle firing depth</p> GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom Biological and Chemical Oceanography Data Management Office (BCO-DMO) Unavailable 508-289-2009 WHOI MS#36 Woods Hole MA 02543 USA info@bco-dmo.org http://www.bco-dmo.org Monday - Friday 8:00am - 5:00pm For questions regarding this resource, please contact BCO-DMO via the email address provided. pointOfContact 9019 https://darchive.mblwhoilibrary.org/bitstream/1912/24966/1/dataset-738001_ctd-log-at37-12__v1.tsv download https://doi.org/10.1575/1912/bco-dmo.738001.1 download onLine asNeeded 7.x-1.1 Biological and Chemical Oceanography Data Management Office (BCO-DMO) Unavailable 508-289-2009 WHOI MS#36 Woods Hole MA 02543 USA info@bco-dmo.org http://www.bco-dmo.org Monday - Friday 8:00am - 5:00pm For questions regarding this resource, please contact BCO-DMO via the email address provided. pointOfContact CTD Sea-Bird rosette as part of R/V Atlantis CTD Sea-Bird rosette as part of R/V Atlantis PI Supplied Instrument Name: CTD Sea-Bird rosette as part of R/V Atlantis Instrument Name: CTD - profiler Instrument Short Name: Instrument Description: The Conductivity, Temperature, Depth (CTD) unit is an integrated instrument package designed to measure the conductivity, temperature, and pressure (depth) of the water column. The instrument is lowered via cable through the water column. It permits scientists to observe the physical properties in real-time via a conducting cable, which is typically connected to a CTD to a deck unit and computer on a ship. The CTD is often configured with additional optional sensors including fluorometers, transmissometers and/or radiometers. It is often combined with a Rosette of water sampling bottles (e.g. Niskin, GO-FLO) for collecting discrete water samples during the cast. This term applies to profiling CTDs. For fixed CTDs, see https://www.bco-dmo.org/instrument/869934. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/130/ Cruise: AT37-12 AT37-12 R/V Atlantis Community Standard Description International Council for the Exploration of the Sea R/V Atlantis vessel AT37-12 Stefan M. Sievert Woods Hole Oceanographic Institution http://datadocs.bco-dmo.org/docs/Vent_O2_NO3_Roles/data_docs/AT37-12_Cruise_Report.pdf Report describing AT37-12 R/V Atlantis Community Standard Description International Council for the Exploration of the Sea R/V Atlantis vessel