http://lod.bco-dmo.org/id/dataset/872729 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 2022-04-05 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Acoustic data from two subsurface moorings deployed near Palmer Deep Canyon from January to March 2020 2022-04-12 publication 2022-04-12 revision Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA) 2022-04-13 publication https://doi.org/10.26008/1912/bco-dmo.872729.1 Joshua Kohut University of Delaware principalInvestigator George Cutter NOAA Fisheries Antarctic Ecosystem Research Division principalInvestigator Christian Reiss NOAA Fisheries Antarctic Ecosystem Research Division 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: Kohut, J., Cutter, G., Reiss, C. (2022) Acoustic data from two subsurface moorings deployed near Palmer Deep Canyon from January to March 2020. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2022-04-12 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.872729.1 [access date] SWARM AMLR moorings - acoustic data Dataset Description: &lt;p&gt;Each mooring has three data files associated with it:&lt;br /&gt; 1) an &quot;_Sv&quot; file containing the processed acoustic return from the mooring in volume backscattering strength in decibels (dB) from the 120 kHz narrowband echosounder in a matrix where rows represent single pings and columns indicate depth bins;&lt;br /&gt; 2) a &quot;_dp&quot; file representing the depth (in meters) of the depth bins for each return with the same dimensions as the &quot;_Sv&quot; file; and&lt;br /&gt; 3) a &quot;_tm&quot; file containing a vector of timestamps corresponding to each ping in seconds since Jan 1 1970 (POSIX), where the length of the vector is equivalent to the number of rows in each matrix.&lt;/p&gt; &lt;p&gt;These files are all available in the attached &quot;all_moorings_files.tar.gz&quot; file.&lt;/p&gt; Methods and Sampling: &lt;p&gt;One mooring was deployed to the eastern (AMLR2) and western (AMLR1) sides of Palmer Deep Canyon to 400 and 345 m, respectively. AMLR1 was deployed at -64.2119, -64.8124 (longitude/latitude) and AMLR2 was deployed at -64.0376, -64.864.&lt;/p&gt; &lt;p&gt;Both moorings were deployed on 6 January 2020. The western mooring was recovered on 3 February and the eastern mooring was recovered on 7 March 2020. The upward facing echosounders pinged at 6 s intervals and had 1168 vertical bins representing 0.375 m in range. These datasets include the 120 kHz returns.&lt;/p&gt; Funding provided by NSF Office of Polar Programs (formerly NSF PLR) (NSF OPP) Award Number: OPP-1745009 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1745009 Funding provided by NSF Office of Polar Programs (formerly NSF PLR) (NSF OPP) Award Number: OPP-1744884 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1744884 Funding provided by NSF Office of Polar Programs (formerly NSF PLR) (NSF OPP) Award Number: OPP-1745011 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1745011 Funding provided by NSF Office of Polar Programs (formerly NSF PLR) (NSF OPP) Award Number: OPP-1745018 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1745018 Funding provided by NSF Office of Polar Programs (formerly NSF PLR) (NSF OPP) Award Number: OPP-1745023 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1745023 Funding provided by NSF Office of Polar Programs (formerly NSF PLR) (NSF OPP) Award Number: OPP-1745081 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1745081 completed Joshua Kohut University of Delaware 848-932-3496 71 Dudley Rd. Brunswick NJ 08901 USA kohut@marine.rutgers.edu pointOfContact George Cutter NOAA Fisheries Antarctic Ecosystem Research Division 8901 La Jolla Shores Drive Room 333 La Jolla CA 92037 USA george.cutter@noaa.gov pointOfContact Christian Reiss NOAA Fisheries Antarctic Ecosystem Research Division 8901 La Jolla Shores Drive Room 333 La Jolla CA 92037 USA christian.reiss@noaa.gov pointOfContact asNeeded Dataset Version: 1 Unknown Nortek Signature 100 Acoustic Doppler Current Profiler theme None, User defined Nortek Signature 100 Acoustic Doppler Current Profiler 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: Physical Mechanisms Driving Food Web Focusing in Antarctic Biological Hotspots https://osprey.bco-dmo.org/project/850844 Collaborative Research: Physical Mechanisms Driving Food Web Focusing in Antarctic Biological Hotspots <p>NSF Award Abstract:<br /> Undersea canyons play disproportionately important roles as oceanic biological hotspots and are critical for our understanding of many coastal ecosystems. Canyon-associated biological hotspots have persisted for thousands of years Along the Western Antarctic Peninsula, despite significant climate variability. Observations of currents over Palmer Deep canyon, a representative hotspot along the Western Antarctic Peninsula, indicate that surface phytoplankton blooms enter and exit the local hotspot on scales of ~1-2 days. This time of residence is in conflict with the prevailing idea that canyon associated hotspots are primarily maintained by phytoplankton that are locally grown in association with these features by the upwelling of deep waters rich with nutrients that fuel the phytoplankton growth. Instead, the implication is that horizontal ocean circulation is likely more important to maintaining these biological hotspots than local upwelling through its physical concentrating effects. This project seeks to better resolve the factors that create and maintain focused areas of biological activity at canyons along the Western Antarctic Peninsula and create local foraging areas for marine mammals and birds. The project focus is in the analysis of the ocean transport and concentration mechanisms that sustain these biological hotspots, connecting oceanography to phytoplankton and krill, up through the food web to one of the resident predators, penguins. In addition, the research will engage with teachers from school districts serving underrepresented and underserved students by integrating the instructors and their students completely with the science team. Students will conduct their own research with the same data over the same time as researchers on the project. Revealing the fundamental mechanisms that sustain these known hotspots will significantly advance our understanding of the observed connection between submarine canyons and persistent penguin population hotspots over ecological time, and provide a new model for how Antarctic hotspots function.</p> <p> To understand the physical mechanisms that support persistent hotspots along the Western Antarctic Peninsula (WAP), this project will integrate a modeling and field program that will target the processes responsible for transporting and concentrating phytoplankton and krill biomass to known penguin foraging locations. Within the Palmer Deep canyon, a representative hotspot, the team will deploy a High Frequency Radar (HFR) coastal surface current mapping network, uniquely equipped to identify the eddies and frontal regions that concentrate phytoplankton and krill. The field program, centered on surface features identified by the HFR, will include (i) a coordinated fleet of gliders to survey hydrography, chlorophyll fluorescence, optical backscatter, and active acoustics at the scale of the targeted convergent features; (ii) precise penguin tracking with GPS-linked satellite telemetry and time-depth recorders (TDRs); (iii) and weekly small boat surveys that adaptively target and track convergent features to measure phytoplankton, krill, and hydrography. A high resolution physical model will generalize our field measurements to other known hotspots along the WAP through simulation and determine which physical mechanisms lead to the maintenance of these hotspots. The project will also engage educators, students, and members of the general public in Antarctic research and data analysis with an education program that will advance teaching and learning as well as broadening participation of under-represented groups. This engagement includes professional development workshops, live connections to the public and classrooms, student research symposia, and program evaluation. Together the integrated research and engagement will advance our understanding of the role regional transport pathways and local depth dependent concentrating physical mechanisms play in sustaining these biological hotspots.</p> <p>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.</p> Project SWARM largerWorkCitation project eng; USA oceans -64.2119 -64.0376 -64.864 -64.8124 2020-01-06 2020-03-07 West Antarctic Peninsula 0 BCO-DMO catalogue of parameters from Acoustic data from two subsurface moorings deployed near Palmer Deep Canyon from January to March 2020 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 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 10827039732 https://darchive.mblwhoilibrary.org/bitstream/1912/28459/1/all_moorings_files.tar.gz download https://doi.org/10.26008/1912/bco-dmo.872729.1 download onLine dataset &lt;p&gt;One mooring was deployed to the eastern (AMLR2) and western (AMLR1) sides of Palmer Deep Canyon to 400 and 345 m, respectively. AMLR1 was deployed at -64.2119, -64.8124 (longitude/latitude) and AMLR2 was deployed at -64.0376, -64.864.&lt;/p&gt; &lt;p&gt;Both moorings were deployed on 6 January 2020. The western mooring was recovered on 3 February and the eastern mooring was recovered on 7 March 2020. The upward facing echosounders pinged at 6 s intervals and had 1168 vertical bins representing 0.375 m in range. These datasets include the 120 kHz returns.&lt;/p&gt; Specified by the Principal Investigator(s) &lt;p&gt;&lt;strong&gt;Data Processing:&lt;/strong&gt;&lt;br /&gt; Raw data were processed using the methods outlined in Cutter et al., 2022. Individual .mat files that resulted from processing procedures were concatenated in R by row using rbind to produce single acoustic return (Sv), time, and depth files for each mooring. Time was transformed from Julian day to POSIX time in R. Data processing methods can be found in Cutter, et al. (2022).&lt;/p&gt; &lt;p&gt;&lt;strong&gt;BCO-DMO Processing:&lt;/strong&gt;&lt;br /&gt; - saved the csv files in a single .tar.gz file&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 Nortek Signature 100 Acoustic Doppler Current Profiler Nortek Signature 100 Acoustic Doppler Current Profiler PI Supplied Instrument Name: Nortek Signature 100 Acoustic Doppler Current Profiler PI Supplied Instrument Description:Nortek Signature 100 echosounders SNs 101132 and 101134 Instrument Name: Nortek Signature 100 Acoustic Doppler Current Profiler Instrument Short Name: Instrument Description: A long-range current profiler designed for combined current profile and biomass measurements. The Signature100 combines a four-beam current profiler operating at 100 kHz with an optional scientific echosounder. Applications include providing insight into the dynamics of zooplankton, krill or schools of fish; current profiling; providing insight into small-scale physical processes; and upwelling and downwelling studies. The instrument is suitable for buoy mounting with internal attitude and heading reference system (AHRS). Optional centre beam with 70-120 kHz Both the current profiler and the biomass measurements have an effective range of 300-400 m. The echosounder has a velocity resolution of 0.1 cm/s, a maximum sampling rate of 1 Hz (1/2 Hz at max output power), and a standard range of 0-1500 m.