Name: Oxygen_Consumption_DIC_Production
Display Field: GA_Sample_ID
Type: Feature Layer
Geometry Type: esriGeometryPoint
Description: This data layer comprises oxygen consumption rates and dissolved inorganic carbon (DIC) production rates measured on seabed sediments using incubated cores.
A 4.5cm diameter core of surface sediment overlain by 0.118L of local seawater was incubated in the dark for ~4 hours at ~26oC after a ~3 hour pre-incubation period. Dissolved oxygen levels were measured at ~30 minute intervals. Samples for DIC analysis were taken at the start and finish of the incubation. Blank cores (local seawater only) accompanied all incubations. Dissolved inorganic carbon (DIC) was determined using a DIC analyser and infrared-based CO2 detector. (Geoscience Australia). CO2/O2 production/consumption rates were calculated by concentration differences (T=1 - T=0) over the incubation period. Accuracy of O2 measurements was ± 0.1 mg L-1. The average %RSD of the precision and accuracies of the dissolved inorganic carbon analyses were 1.1 +/- 1.1 %.
Definition Expression: N/A
Copyright Text: © Commonwealth of Australia (Geoscience Australia) 2016. This product is released under the Creative Commons Attribution 4.0 International Licence. http://creativecommons.org/licenses/by/4.0/legalcode
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Extent:
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Outline:
Label: Oxygen Consumption and DIC Production
Description:
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Type ID Field: null
Fields:
-
OBJECTID
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type: esriFieldTypeOID
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alias: OBJECTID
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GA_Sample_number
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type: esriFieldTypeDouble
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alias: GA_Sample_number
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GA_Sample_ID
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Water_depth__m_
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type: esriFieldTypeDouble
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alias: Water_depth__m_
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O2_consumption__mmol_m2_d_
(
type: esriFieldTypeDouble
,
alias: O2_consumption__mmol_m2_d_
)
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O2_flux_stdev__mmol_m2_d_
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type: esriFieldTypeDouble
,
alias: O2_flux_stdev__mmol_m2_d_
)
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TOU__mmol_m2_d_
(
type: esriFieldTypeDouble
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alias: TOU__mmol_m2_d_
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TCO2_production__mmol_m2_d_
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TCO2_flux_stdev__mmol_m2_d_
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