Name: Total_Sediment_Metabolism

Display Field: GA_Sample_ID

Type: Feature Layer

Geometry Type: esriGeometryPoint

Description: This data layer comprises total sediment metabolism (dissolved inorganic carbon production) measurements and DIC pools in the upper 2 cm of the seabed. Bottom sediments were collected using either a Smith McIntyre grab or a Box Core. Surface sediment (0-2 cm) was syringed into falcon vials. Pore waters were removed within 20 minutes of collection, and salinity, temperature and pH measurements were taken. The pore waters were then filtered (0.45 µm) into 3 ml gas-tight vials (pre-charged with 0.025 HgCl2). The procedure was repeated on pore waters from a second bulk sample that was incubated for ~24 hrs at sea surface temperatures. Dissolved inorganic carbon (DIC) concentrations were determined using a DIC analyser and infrared-based CO2 detector. (Geoscience Australia). CO2 production rates were calculated by concentration differences over the incubation period, after correction for CaCO3 fluxes. The average %RSD of the precisions and accuracies of the dissolved inorganic carbon measurements were 1.1 +/-1.1%. The accuracy of the wet/dry weight used in the calculations where better than 1%.

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

Default Visibility: true

MaxRecordCount: 1000

Supported Query Formats: JSON, geoJSON

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Extent:

XMin: 126.91223300000001
YMin: -12.209479999999928
XMax: 127.45321700000011
YMax: -11.329049999999938
Spatial Reference: 4326  (4326)

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Label: Total Sediment Metabolism
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Type ID Field: null

Fields:

• objectid ( type: esriFieldTypeOID, alias: OBJECTID )
• ga_sample_number ( type: esriFieldTypeDouble, alias: GA_Sample_number )
• ga_sample_id ( type: esriFieldTypeString, alias: GA_Sample_ID, length: 255 )
• sample_type ( type: esriFieldTypeString, alias: Sample_type, length: 255 )
• longitude ( type: esriFieldTypeDouble, alias: Longitude )
• latitude ( type: esriFieldTypeDouble, alias: Latitude )
• water_depth__m_ ( type: esriFieldTypeDouble, alias: Water_depth__m_ )
• acquire_date ( type: esriFieldTypeString, alias: Acquire_date, length: 255 )
• sediment_depth__cm_ ( type: esriFieldTypeString, alias: Sediment_depth__cm_, length: 255 )
• porewater_ph ( type: esriFieldTypeDouble, alias: Porewater_pH )
• porewater_temperature__oc_ ( type: esriFieldTypeDouble, alias: Porewater_temperature__oC_ )
• porewater_salinty ( type: esriFieldTypeDouble, alias: Porewater_salinty )
• total_sediment_metabolism__umol ( type: esriFieldTypeDouble, alias: Total_sediment_metabolism__umol_DIC_cm3_d_ )
• total_sediment_metabolism__um_1 ( type: esriFieldTypeDouble, alias: Total_sediment_metabolism__umol_DIC_g_d_ )
• tco2_pool__umol_cm3_ ( type: esriFieldTypeDouble, alias: TCO2_pool__umol_cm3_ )
• tco2_pool__umol_g_ ( type: esriFieldTypeDouble, alias: TCO2_pool__umol_g_ )
• shape ( type: esriFieldTypeGeometry, alias: Shape )

Supported Operations:   Query   Query Attachments   Generate Renderer   Return Updates

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