TemperateReefBase Geonetwork Catalogue
Total organic material and grain size data in marine sediment samples taken as part of the Davis Sewage Treatment Project, summer 2009/10
Total Organic Carbon
A 2 g homogenised wet sediment sub-sample from each core was weighed into a pre-combusted crucible and dried at 105 degrees C. The dried sample was reweighed before being analysed for total carbon by mass loss on ignition at 550 degrees C, the sample was placed in the muffle furnace for 4 hours.
Samples 56698, 57062, 56837, 57058, and 580792 were analysed in triplicate to assess the reproducibility of the analytical procedure. (Total number of analyses was 117).
- TOC
- For the 107 samples:
- Mean and SD: 3 plus or minus 4 % DMB, range: 0.16-15 %, n=107
- Considering the mean values for the 27 site locations:
- Range: 0.33-14 % DMB, mean and SD: 3.3 plus or minus 3.7 % DMB, n=27
- Analytical uncertainty
- Analytical precision: 5 samples analysed in triplicate:
- RSD = 6 plus or minus 5% range 1-11%, n=5
- Site heterogeneity: reproducibility (RSD) of mean data from site replicate samples was 26% (mean, SD 15%, range 10-57%, n=27)
- From the limited data on reproducibility summarised above, it can be concluded that site heterogeneity contributes most to the uncertainty of the TOC data for the site locations.
- DMF
- For the 107 samples:
- Mean and SD: 0.57 plus or minus 0.23 %, range: 0.09-0.85, n=107
- Considering the mean values for the 27 site locations:
- Range:0.17-0.83, mean and SD: 0.57 plus or minus 0.22, n=27
- Analytical uncertainty
- Analytical precision: 5 samples analysed in triplicate:
- RSD = 2 plus or minus 2% range 0.8-5%, n=5
- Site heterogeneity: reproducibility (RSD) of mean data from site replicate samples (mostly quadruplicates) was 10% (mean, SD 10%, range 1-37%, n=27)
- From the limited data on reproducibility summarised above, it can be concluded that site heterogeneity contributes most to the uncertainty of the DMF data for the site locations.
Collection of sediment cores
Sediment for grain size and various chemical analysis were sampled using a core of PVC tubing (15cm long x 5cm diameter) pushed 10cm into the sediment. These cores were kept upright at all times to ensure the stratigraphy remained intact and frozen in the core tube at -20 degrees C.
Grain size analysis
The outer 5 mm edge of the core was removed with a scalpel blade and placed in a clean, dried preweighed beaker. The sample was weighed and placed in an oven at 45 degrees C to dry. Once dry the sample was reweighed and then sieved through a 2 mm sieve, any residual sediment in the beaker was weighed and the weight recorded. The less than 2 mm fraction and the greater than 2 mm fraction were separately collected and weighed. A 5 g sample of the less than 2 mm fraction was taken for grain size analysis which was carried out using the Mastersizer 2000 Particle Size Analyser by Associate Professor Damian Gore at the Department of Physical Geography, Macquarie University, Sydney.
Simple
Identification info
- Alternate title
- Total organic material and grain size data in marine sediment samples taken as part of the Davis Sewage Treatment Project, summer 2009/10
- Date (Publication)
- 2015-12-01
- Edition
- 1
Originator
Publisher
Principal investigator
Principal investigator
Collaborator
Collaborator
- Name
- CAASM Metadata
- Purpose
- To determine the total organic carbon content of marine sediment samples taken as part of the Davis Sewage Treatment Project around Davis Station during the 2009/10 austral summer.
- Status
- Completed
Custodian
- Topic category
-
- Environment
- Oceans
Extent
))
Extent
- Description
- Temporal Coverage
Temporal extent
- TimePeriod
- 2009-01-01 2010-12-31
- Title
- Dispersal and dilution of wastewater from an ocean outfall at Davis Station, Antarctica, and resulting environmental contamination
- Date (Publication)
- 2016
- Citation identifier
- 152
Author
- Name
- Chemosphere
- Page
- 142-157
- NASA/GCMD Earth Science Keywords
-
- EARTH SCIENCE > OCEANS > MARINE SEDIMENTS > SEDIMENT COMPOSITION
- EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ORGANIC MATTER
- Keywords
-
- Carbon
- Sediment
- Sewage
- NASA/GCMD Earth Science Keywords
-
- LABORATORY
- NASA/GCMD Earth Science Keywords
-
- AMD/AU
- AMD
- CEOS
- NASA/GCMD Earth Science Keywords
-
- GEOGRAPHIC REGION > POLAR
- CONTINENT > ANTARCTICA
- VERTICAL LOCATION > SEA FLOOR
- OCEAN > SOUTHERN OCEAN
Resource constraints
- Use limitation
- This metadata record is publicly available.
Resource constraints
- Access constraints
- licence
- Other constraints
- These data are not yet publicly available.
Resource constraints
- File type
- Portable Network Graphic
- Title
- Attribution 4.0 International (CC BY 4.0)
- Website
-
https://creativecommons.org/licenses/by/4.0/legalcode
Legal code for Creative Commons by Attribution 4.0 International license
- Use constraints
- licence
- Other constraints
- This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=DAVIS_STP_TotalOrganicMaterial_GrainSize when using these data.
- Language
- English
- Character encoding
- UTF8
Distribution Information
Distributor
Distributor
- OnLine resource
-
PROJECT HOME PAGE
Public information for AAS project AAS_3217
- OnLine resource
-
VIEW RELATED INFORMATION
Citation reference for this metadata record and dataset.
- Maintenance and update frequency
- As needed
- Maintenance note
- 2015-12-01 - record created by Glenn Johnstone. 2018-01-10 - Record updated by Dave Connell after Glenn Johnstone sent some new information. 2018-02-09 - record updated by Dave Connell to add a publication at the request of Glenn Johnstone.
Metadata
- Metadata identifier
- string/DAVIS_STP_TotalOrganicMaterial_GrainSize
- Language
- English
- Character encoding
- UTF8
Author
Sponsor
Owner
- Title
- Parent Metadata Record
- Citation identifier
- DAVIS_STP_Chemistry
Type of resource
- Resource scope
- Dataset
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Citation identifier
- e04d1fcd-1dfa-4974-9211-2ad639fc6cec
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Date (Last Revision)
- 2015-12-01T01:40:22
Identifier
- Description
- metadata.extraction_date
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Citation identifier
- 8.6
- Metadata linkage
-
http://data.aad.gov.au/metadata/records/DAVIS_STP_TotalOrganicMaterial_GrainSize
Point of truth for the metadata record
- Date info (Creation)
- 2015-12-01T00:00:00
- Date info (Last Update)
- 2018-02-09
Metadata standard
- Title
- ISO 19115-3
- Edition
- 2014
- Other citation details
- Version 1
- Title
- DIF to ISO 19115-1 Profile
Overviews
Spatial extent
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