Water sample logs from GEOTRACES-Arctic Section cruise HLY1502 in 2015 (U.S. GEOTRACES Arctic project)

Website: https://www.bco-dmo.org/dataset/647591
Data Type: Cruise Results
Version: 1
Version Date: 2016-05-25

Project
» U.S. Arctic GEOTRACES Study (GN01) (U.S. GEOTRACES Arctic)

Program
» U.S. GEOTRACES (U.S. GEOTRACES)
ContributorsAffiliationRole
Cutter, Gregory A.Old Dominion University (ODU)Principal Investigator
Kadko, David C.Florida International University (FIU)Principal Investigator
Landing, William M.Florida State University (FSU - EOAS)Principal Investigator, Contact
Copley, NancyWoods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager

Abstract
Water sample logs from GEOTRACES-Arctic Section cruise HLY1502 in 2015.


Coverage

Spatial Extent: N:89.9935 E:11.9102 S:60.1658 W:88.695
Temporal Extent: 2015-08-02 - 2015-10-08

Dataset Description

Hand-written water sample logs from GEOTRACES-Arctic Section cruise HLY1502 (pdf)

Event descripton Code
unknown / not entered nd
30L Niskin Rosette 30-ODF
Be-7 Be-7
GEOTRACES carousel GT-C
Small boat sampling Sboat
Ice edge water sampling I-edge
Ice hole water sampling I-hole
Ice pond sampling I-pond
Ice core sampling I-core
Dirty ice sampling I-dirt
Snow Sampling Snow
NASA solar reference mast UP MastUp
NASA solar reference mast DOWN MastDown
McLane pump profile McL-Prof
Aerosol sampler Aeros
Argo Float deployment Argo
Apparent Optical Properties cast AOP
NASA surface pump water sample NASAsurf
NEMO Float Deployment NEMO
Ra/Th/Pigment Niskin Cast Ra/Th/Pig
Surface Ra bag Surf Ra bag
Rain sample Rain
Multi-Corer MTC
Mono-Corer Mono
XBT XBT
XCDT XCTD
36pl 10L Rosette GS
Buoy deployment Buoy
Ship's Underway system sample UWay
   
Samples Taken  
unknown/ not recorded nd
dissolved samples diss
dissolved and particulate samples diss+part
unfiltered seawater unfilt
filter for particulates filter
Dissolved TM, Mn; Unfiltered TM diss+ UF
Argo Float deployment Argo
Sediments dirt
Particle part
none none

Data Processing Description

BCO-DMO Processing:

- added conventional header with dataset name; PI name; version date
- created dataset from list of file names; added cruise_id, event #, station, and cast columns; joined this with eventlog dataset
- created links to .pdf files
- joined this dataset with eventlog v2 dataset to provide date/time/location, etc.


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Data Files

File
sample_logs_joined.csv
(Comma Separated Values (.csv), 81.65 KB)
MD5:aaf26ae0d05da287ffa954695dd95aa0
Primary data file for dataset ID 647591

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Parameters

ParameterDescriptionUnits
cruise_idcruise identification unitless
instsamplling instrument unitless
sample_typeSamples Taken Codes: see description section unitless
GEOTRC_EVENTNOGeotraces event number unitless
STNNBRGeotraces station number unitless
castcast number provided by PI unitless
event_descriptioncast number unitless
samples_takenEvent Description Event Description Codes: see description section unitless
sample_detailfurther information regarding sample location or outcome unitless
filenamelog file name unitless
LOCATIONlocation descriptor (typically station id) unitless
DATE_STARTStart date (GMT): yyyymmdd year month and day
TIME_STARTStart time (GMT): HHMM hours and minutes
ISO_DateTime_UTC_STARTStart date/time ISO formatted: YYYY-MM-DDTHH:MM:SS[.xx]Z year month day hours minutes
DATE_ENDEnd date (GMT) year month and day
TIME_ENDEnd time (GMT) hours and minutes
ISO_DateTime_UTC_ENDEnd date/time ISO formatted: YYYY-MM-DDTHH:MM:SS[.xx]Z year month day hours minutes
LAT_DEG_NLatitude degrees north degrees
LAT_MIN_NLatitude minutes north decimal minutes
LATITUDELatitude; north is positive decimal degrees
LON_DEG_WLongitude degrees west degrees
LON_MIN_WLongitude minutes west decimal minutes
LONGITUDELongitude; east is positive decimal degrees
DEPTH_MINMinimum depth meters
DEPTH_MAXMaximum depth meters
GEOTRACES_ID_Number_RangeThe range of GEOTRACES ID numbers that the log file covers. unitless
COMMENTComments unitless


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Instruments

Dataset-specific Instrument Name
Generic Instrument Name
CTD Sea-Bird
Dataset-specific Description
ODF 12-place 30 liter Niskin bottle rosette, replaced by ODF 36-place 10 liter Bullister bottle rosette; GT-C unit comprosed of Seabird carousel/CTD with 24 12L GO-FLO bottles.
Generic Instrument Description
Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics, no specific unit identified. This instrument designation is used when specific make and model are not known. See also other SeaBird instruments listed under CTD. More information from Sea-Bird Electronics.

Dataset-specific Instrument Name
Generic Instrument Name
GO-FLO Teflon Trace Metal Bottle
Dataset-specific Description
12 liters
Generic Instrument Description
GO-FLO Teflon-lined Trace Metal free sampling bottles are used for collecting water samples for trace metal, nutrient and pigment analysis. The GO-FLO sampling bottle is designed specifically to avoid sample contamination at the surface, internal spring contamination, loss of sample on deck (internal seals), and exchange of water from different depths.

Dataset-specific Instrument Name
Generic Instrument Name
Pump surface
Dataset-specific Description
Battery powered pump and Teflon-lined PVC tubing for surface (1m) sample
Generic Instrument Description
A source of uncontaminated near-surface seawater pumped onto the deck of the research vessel that can be sampled and analyzed. This pumped seawater supply is from an over-the-side pumping system, and is therefore different from the vessel underway seawater system.

Dataset-specific Instrument Name
Generic Instrument Name
Bottom Sediment Grab Samplers
Dataset-specific Description
a monocorer device attached to bottom of CTD rosette
Generic Instrument Description
These samplers are designed to collect an accurate representative sample of the sediment bottom. The bite of the sampler should be deep enough so all depths are sampled equally. The closing mechanism is required to completely close and hold the sample as well as prevent wash-out during retrieval. Likewise, during descent the sampler should be designed to minimize disturbance of the topmost sediment by the pressure wave as it is lowered to the bottom.


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Deployments

HLY1502

Website
Platform
USCGC Healy
Report
Start Date
2015-08-09
End Date
2015-10-12
Description
Arctic transect encompassing Bering and Chukchi Shelves and the Canadian, Makarov and Amundsen sub-basins of the Arctic Ocean. The transect started in the Bering Sea (60°N) and traveled northward across the Bering Shelf, through the Bering Strait and across the Chukchi shelf, then traversing along 170-180°W across the Alpha-Mendeleev and Lomonosov Ridges to the North Pole (Amundsen basin, 90°N), and then back southward along ~150°W to terminate on the Chukchi Shelf (72°N). Additional cruise information is available in the GO-SHIP Cruise Report (PDF) and from the Rolling Deck to Repository (R2R): https://www.rvdata.us/search/cruise/HLY1502


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Project Information

U.S. Arctic GEOTRACES Study (GN01) (U.S. GEOTRACES Arctic)


Coverage: Arctic Ocean; Sailing from Dutch Harbor to Dutch Harbor (GN01)


Description from NSF award abstract:
In pursuit of its goal "to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions", in 2015 the International GEOTRACES Program will embark on several years of research in the Arctic Ocean. In a region where climate warming and general environmental change are occurring at amazing speed, research such as this is important for understanding the current state of Arctic Ocean geochemistry and for developing predictive capability as the regional ecosystem continues to warm and influence global oceanic and climatic conditions. The three investigators funded on this award, will manage a large team of U.S.scientists who will compete through the regular NSF proposal process to contribute their own unique expertise in marine trace metal, isotopic, and carbon cycle geochemistry to the U.S. effort. The three managers will be responsible for arranging and overseeing at-sea technical services such as hydrographic measurements, nutrient analyses, and around-the-clock management of on-deck sampling activites upon which all participants depend, and for organizing all pre- and post-cruise technical support and scientific meetings. The management team will also lead educational outreach activities for the general public in Nome and Barrow, Alaska, to explain the significance of the study to these communities and to learn from residents' insights on observed changes in the marine system. The project itself will provide for the support and training of a number of pre-doctoral students and post-doctoral researchers. Inasmuch as the Arctic Ocean is an epicenter of global climate change, findings of this study are expected to advance present capability to forecast changes in regional and globlal ecosystem and climate system functioning.

As the United States' contribution to the International GEOTRACES Arctic Ocean initiative, this project will be part of an ongoing multi-national effort to further scientific knowledge about trace elements and isotopes in the world ocean. This U.S. expedition will focus on the western Arctic Ocean in the boreal summer of 2015. The scientific team will consist of the management team funded through this award plus a team of scientists from U.S. academic institutions who will have successfully competed for and received NSF funds for specific science projects in time to participate in the final stages of cruise planning. The cruise track segments will include the Bering Strait, Chukchi shelf, and the deep Canada Basin. Several stations will be designated as so-called super stations for intense study of atmospheric aerosols, sea ice, and sediment chemistry as well as water-column processes. In total, the set of coordinated international expeditions will involve the deployment of ice-capable research ships from 6 nations (US, Canada, Germany, Sweden, UK, and Russia) across different parts of the Arctic Ocean, and application of state-of-the-art methods to unravel the complex dynamics of trace metals and isotopes that are important as oceanographic and biogeochemical tracers in the sea.



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Program Information

U.S. GEOTRACES (U.S. GEOTRACES)


Coverage: Global


GEOTRACES is a SCOR sponsored program; and funding for program infrastructure development is provided by the U.S. National Science Foundation.

GEOTRACES gained momentum following a special symposium, S02: Biogeochemical cycling of trace elements and isotopes in the ocean and applications to constrain contemporary marine processes (GEOSECS II), at a 2003 Goldschmidt meeting convened in Japan. The GEOSECS II acronym referred to the Geochemical Ocean Section Studies To determine full water column distributions of selected trace elements and isotopes, including their concentration, chemical speciation, and physical form, along a sufficient number of sections in each ocean basin to establish the principal relationships between these distributions and with more traditional hydrographic parameters;

* To evaluate the sources, sinks, and internal cycling of these species and thereby characterize more completely the physical, chemical and biological processes regulating their distributions, and the sensitivity of these processes to global change; and

* To understand the processes that control the concentrations of geochemical species used for proxies of the past environment, both in the water column and in the substrates that reflect the water column.

GEOTRACES will be global in scope, consisting of ocean sections complemented by regional process studies. Sections and process studies will combine fieldwork, laboratory experiments and modelling. Beyond realizing the scientific objectives identified above, a natural outcome of this work will be to build a community of marine scientists who understand the processes regulating trace element cycles sufficiently well to exploit this knowledge reliably in future interdisciplinary studies.

Expand "Projects" below for information about and data resulting from individual US GEOTRACES research projects.



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Funding

Funding SourceAward
NSF Division of Ocean Sciences (NSF OCE)
NSF Division of Ocean Sciences (NSF OCE)
NSF Division of Ocean Sciences (NSF OCE)
NSF Division of Ocean Sciences (NSF OCE)

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