http://lod.bco-dmo.org/id/dataset/894323 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 2023-04-19 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Sediment grain size data collected from a shallow subterranean estuary (STE) in Gloucester Point, Virginia USA, from 2018 to 2019 2023-05-01 publication 2023-05-01 revision Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA) 2023-05-10 publication https://doi.org/10.26008/1912/bco-dmo.894323.1 Bongkeun Song Virginia Institute of Marine Science principalInvestigator Iris C. Anderson Virginia Institute of Marine Science principalInvestigator Craig Tobias University of Connecticut 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: Wilson, S. J., Song, B., Anderson, I. C., Tobias, C. (2023) Sediment grain size data collected from a shallow subterranean estuary (STE) in Gloucester Point, Virginia USA, from 2018 to 2019. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-05-01 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.894323.1 [access date] Methods and Sampling: &lt;p&gt;The grain size of sediment samples was collected from a sandy subterranean estuary (STE) located in Gloucester Point (GP), Virginia, USA. Sediments were measured for grain size with a laser diffraction particle size analyzer (LDPSA, model: LS 13 320, Beckman Coulter).&amp;nbsp;Particle size distributions of GP-STE sediment were determined with an LDPSA using the Fraunhofer Theory. Samples were subsampled from sediment vibracores collected at the GP-STE&amp;nbsp; in July 2018 and replicate samples (0 centimeters, 50 centimeters, and 100 centimeters) from the January 2019 core. The data output produced by the LDPSA corresponds to the Wentworth scale range of sediment grain size categories. Samples were prepped with 10 percent (%) Calgon solution prior to analysis.&lt;/p&gt; Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1658135 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1658135 completed Bongkeun Song Virginia Institute of Marine Science 804-684-7411 P.O Box 1346 Gloucester Point VA 23692 USA songb@vims.edu pointOfContact Iris C. Anderson Virginia Institute of Marine Science 757-876-9436 P.O Box 1346 Gloucester Point VA 23062 USA iris@vims.edu pointOfContact Craig Tobias University of Connecticut 860-405-9140 1080 Shennecossett Rd. Groton CT 06340 USA craig.tobias@uconn.edu pointOfContact asNeeded Dataset Version: 1 Unknown Season_Sampled Latitude Longitude Date Depth_Interval Mean_Grain_Size Percent_Sand Percent_Mud Percent_Very_Coarse_Sand Percent_Coarse_Sand Percent_Medium_Sand Percent_Fine_Sand Percent_Very_Fine_Sand Percent_Silt Percent_Clay Median_Grain_Size d10 d50 LDPSA, model: LS 13 320, Beckman Coulter theme None, User defined season latitude longitude date depth core mean sand size fraction Wentworth scale clay size fraction Wentworth scale silt size fraction Wentworth scale sediment grain size featureType BCO-DMO Standard Parameters Laser Diffraction Particle Size Analyzer Vibracore instrument BCO-DMO Standard Instruments 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: Cryptic nitrogen cycling in the anoxic subterranean estuary https://osprey.bco-dmo.org/project/805722 Collaborative Research: Cryptic nitrogen cycling in the anoxic subterranean estuary <p><em>NSF Award Abstract:</em><br /> Nitrogen is an important nutrient that maintains high coastal ecosystem productivity. Yet excess nitrogen delivery can cause serious water quality deterioration including harmful algal blooms, fish kills, and oxygen free dead zones. Numerous nitrogen transformations regulate the balance between nitrogen delivery and nitrogen removal in coastal environments and the majority of these reactions occur in sediments where seawater passes through the subsurface and mixes with groundwater transported from uplands. This mixing zone, referred to as the subterranean estuary, is characterized by very different geochemistry than either the seawater above it or the groundwater below it. Thus, it has the potential to host a variety of unique reactions that affect nitrogen availability to the overlying water. Scientists from the College of William and Mary, Virginia Institute of Marine Science (VIMS), and the University of Connecticut (UConn) propose to examine the importance of a cryptic nitrogen cycle, a novel and potentially widespread nitrogen cycling process in the subterranean estuary. The cryptic nitrogen cycle comprises anoxic ammonium oxidation to nitrite (anoxic nitrification) coupled with anaerobic ammonium oxidation (anammox) or denitrification producing harmless dinitrogen gas. The proposed project represents highly transformative science because it has the potential to change the current paradigm detailing operation of the biogeochemical nitrogen cycle in anoxic environments. Occurrence of the cryptic nitrogen cycle would have broad implications for the nitrogen budget of terrestrial and groundwater systems and the coastal ocean. Characterization of the cryptic nitrogen cycle will allow us to better understand interactions among the nitrogen, metals, and sulfur cycles, and potential impacts of ongoing human modification of coastal environments. Educational contribution of this project focuses on graduate and undergraduate student training. Two graduate students at VIMS and UConn will receive interdisciplinary training in microbiology, molecular ecology, and biogeochemistry while several undergraduates recruited through the VIMS REU (Research Experience for Undergraduates) Program and the UConn marine science programs will also participate in the project. In addition, three summer undergraduate interns will be recruited from Hampton University, a historically Black college, and trained to enhance minority education and research in marine science. Public outreach will be achieved through popular venues such as VIMS Marine Science Day, and the VIMS After Hours Public Lecture Series at VIMS. Tobias at UConn also provides educational contributions and outreach efforts through the UConn Marine Scholars and Early College Experience programs and an exhibit at Mystic Aquarium.</p> <p>A cryptic nitrogen cycle is proposed as a new process coupling anoxic nitrification to microbial nitrogen removal pathways such as anammox and denitrification. Unlike anammox, which refers to the oxidation of ammonium by nitrite to form dinitrogen (N2) gas, anoxic nitrification occurs by oxidation of ammonium in the absence of oxygen using other common chemical oxidants such as metal oxides (namely, Fe and Mn) or sulfate, abundant in many marine and coastal systems. The thermodynamic favorability of these reactions relies on coupling nitrite formed via these oxidants with anammox or denitrification. Due to the coupling, nitrite will not accumulate or be measurable in anoxic marine systems. Thus, a cryptic N cycle responsible for nitrite production can occur as a novel N transforming process in anoxic environments, serve as a vital link to N2 production, and attenuate N loads discharging from a subterranean estuary (STE). Preliminary results from a STE in the York River Estuary located in Virginia showed substantial N2 production, representing removal of 50-75% of the fixed groundwater N, in ferruginous and sulfidic zones where neither nitrite nor nitrate were detectable. Stable isotope incubation experiments using the 15N tracer and molecular analysis of microbial communities suggest that coupled anoxic nitrification and anammox processes are the dominant N2 production pathways rather than canonical denitrification in the STE. Therefore, coupled anoxic nitrification-anammox in coastal groundwater may be a major unrecognized sink for fixed nitrogen at the land-sea interface. In addition to coastal groundwater, the cryptic N cycle has potential importance in anoxic zones and ocean basins. This proposal focuses on the STE because geochemical conditions there appear optimal for the proposed reactions to occur, and our preliminary data show strong evidence for a cryptic N cycle. The proposed work uses a combined geochemical, 15N isotope tracer and microbiological approach to evaluate environmental controls on the cryptic N cycle as well as to estimate its contribution to reduction of fixed N fluxes to the coastal ocean. Four approaches are proposed: (1) Field characterization of anoxic nitrification reactions and associated microbial communities in a subterranean estuary; (2) Laboratory incubation experiments to identify hotspots of the cryptic N cycle; (3) Controlled microcosm experiments to determine geochemical controls on anoxic nitrification; and (4) in situ assessment of anoxic nitrification to estimate the importance of the cryptic N cycle in a coastal aquifer.</p> Subsurface cryptic N cycle largerWorkCitation project eng; USA oceans -76.5053 -76.5053 37.2489 37.2489 2018-07-10 2019-01-16 Temperate (Mid-Atlantic), Sandy Beach along the York River Estuary, Gloucester Point, Virginia, USA (37.24884N/76.505324W) 0 BCO-DMO catalogue of parameters from Sediment grain size data collected from a shallow subterranean estuary (STE) in Gloucester Point, Virginia USA, from 2018 to 2019 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/895641.rdf Name: Season_Sampled Units: unitless Description: <p>Season sediment vibracore was collected</p> http://lod.bco-dmo.org/id/dataset-parameter/895642.rdf Name: Latitude Units: decimal degrees Description: <p>Latitude of coring location</p> http://lod.bco-dmo.org/id/dataset-parameter/895643.rdf Name: Longitude Units: decimal degrees Description: <p>Longitude of coring location</p> http://lod.bco-dmo.org/id/dataset-parameter/895644.rdf Name: Date Units: unitless Description: <p>Date of sampling</p> http://lod.bco-dmo.org/id/dataset-parameter/895645.rdf Name: Depth_Interval Units: centimeters (cm) Description: <p>Depth section of the sediment core used for analysis</p> http://lod.bco-dmo.org/id/dataset-parameter/895646.rdf Name: Mean_Grain_Size Units: micrometers (um) Description: <p>Mean sediment grain size</p> http://lod.bco-dmo.org/id/dataset-parameter/895647.rdf Name: Percent_Sand Units: percent (%) Description: <p>Percent of sediment sample that is sand</p> http://lod.bco-dmo.org/id/dataset-parameter/895648.rdf Name: Percent_Mud Units: percent (%) Description: <p>Percent of sediment sample that is mud</p> http://lod.bco-dmo.org/id/dataset-parameter/895649.rdf Name: Percent_Very_Coarse_Sand Units: percent (%) Description: <p>Percent of sediment sample that is very coarse sand</p> http://lod.bco-dmo.org/id/dataset-parameter/895650.rdf Name: Percent_Coarse_Sand Units: percent (%) Description: <p>Percent of sediment sample that is coarse sand</p> http://lod.bco-dmo.org/id/dataset-parameter/895651.rdf Name: Percent_Medium_Sand Units: percent (%) Description: <p>Percent of sediment sample that is medium sand</p> http://lod.bco-dmo.org/id/dataset-parameter/895652.rdf Name: Percent_Fine_Sand Units: percent (%) Description: <p>Percent of sediment sample that is fine sand</p> http://lod.bco-dmo.org/id/dataset-parameter/895653.rdf Name: Percent_Very_Fine_Sand Units: percent (%) Description: <p>Percent of sediment sample that isvery fine sand</p> http://lod.bco-dmo.org/id/dataset-parameter/895654.rdf Name: Percent_Silt Units: percent (%) Description: <p>Percent of sediment sample that is silt</p> http://lod.bco-dmo.org/id/dataset-parameter/895655.rdf Name: Percent_Clay Units: percent (%) Description: <p>Percent of sediment sample that is clay</p> http://lod.bco-dmo.org/id/dataset-parameter/895656.rdf Name: Median_Grain_Size Units: micrometers (um) Description: <p>Median sediment grain size</p> http://lod.bco-dmo.org/id/dataset-parameter/895657.rdf Name: d10 Units: millimeters (mm) Description: <p>Effective size that directly corresponds to the percentage by weight of grains that equal to 10% on the Wentworth grain-size diagram</p> http://lod.bco-dmo.org/id/dataset-parameter/895658.rdf Name: d50 Units: millimeters (mm) Description: <p>Effective size that directly corresponds to the percentage by weight of grains that equal to 50% on the Wentworth grain-size diagram</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 1955 https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/4f6c9e96-3aa8-427f-be57-6b5c528895f9/content download https://doi.org/10.26008/1912/bco-dmo.894323.1 download onLine dataset &lt;p&gt;The grain size of sediment samples was collected from a sandy subterranean estuary (STE) located in Gloucester Point (GP), Virginia, USA. Sediments were measured for grain size with a laser diffraction particle size analyzer (LDPSA, model: LS 13 320, Beckman Coulter).&amp;nbsp;Particle size distributions of GP-STE sediment were determined with an LDPSA using the Fraunhofer Theory. Samples were subsampled from sediment vibracores collected at the GP-STE&amp;nbsp; in July 2018 and replicate samples (0 centimeters, 50 centimeters, and 100 centimeters) from the January 2019 core. The data output produced by the LDPSA corresponds to the Wentworth scale range of sediment grain size categories. Samples were prepped with 10 percent (%) Calgon solution prior to analysis.&lt;/p&gt; Specified by the Principal Investigator(s) &lt;p dir=&quot;ltr&quot;&gt;&lt;strong&gt;BCO-DMO Processing Description:&lt;/strong&gt;&lt;br /&gt; - Split the column “Location” into “Latitude” and “Longitude”&lt;br /&gt; - Converted the “Date” column to %Y-%m-%d to comply with BCO-DMO standards&lt;br /&gt; - Longitude values were converted to decimal degrees where negative values denote the Southern hemisphere&lt;/p&gt; Specified by the Principal Investigator(s) 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 LDPSA, model: LS 13 320, Beckman Coulter LDPSA, model: LS 13 320, Beckman Coulter PI Supplied Instrument Name: LDPSA, model: LS 13 320, Beckman Coulter Instrument Name: Laser Diffraction Particle Size Analyzer Instrument Short Name: Instrument Description: Laser diffraction is particle sizing technique for materials ranging from hundreds of nanometers up to several millimeters in size. Laser diffraction measures particle size distributions by measuring the angular variation in intensity of light scattered as a laser beam passes through a dispersed particulate sample. One example is the Beckman Coulter LS200. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/150/ PI Supplied Instrument Name: Instrument Name: Vibracore Instrument Short Name: Instrument Description: Vibracoring is a sediment sampling technology to obtain undisturbed cores of unconsolidated, sediment in saturated or nearly saturated conditions by driving sampling tubes with a high-frequency-low-amplitude vibrating device. During sediment coring, the high-frequency vibration transfers the energy to the sediment and aids in the liquefaction of the surrounding sediment. It greatly reduces the friction between the core tube and sediment and eases the core tube to penetrate into the sediment layer. Comparing to non-vibratory coring devices, such as box cores, gravity cores, and piston cores, vibracore has higher core sample recoveries. Vibracorers are effective in both shallow and deep environments. They retrieve core samples with different lengths depending on sediment lithology.