NERC Data Catalogue Service
Water and suspended sediment discharges for the Mekong Delta, Vietnam (2005-2015)
This dataset describes hourly time series of discharge and suspended sediment flux at four sites in the Vietnamese Mekong Delta (Chau Doc, Tan Chau, Can Tho and My Thaun) for the period 2005 – 2015. This data was calculated from historic Acoustic Doppler Current Profiler (aDcp)data obtained as part of routine flood monitoring conducted by the Vietnamese Hydrological Agency. The data were collated by the authors.
The data were processed to back out sediment fluxes through the delta through calibration of the acoustic backscatter signal to suspended sediment concentrations collected in Chau Doc (May 2017) and Can Tho (September 2017). For each aDcp instrument acoustic backscatter signal was calibrated to observed suspended sediment concentrations (SSCs). These concentrations values were then matched to measured acoustic backscatter values (dB) from the depth at which each sample was taken to generate power law calibration curves. To generate daily fluxes, the point specific ADCP fluxes were used to generate sediment ratings curves between sediment flux (kg/s) and discharge (m3/s). These ratings curves were then propagated over recorded daily discharge values measured by the Vietnamese hydrological agency to provide daily fluxes over the period of record.
The work was funded through NERC grant reference NE/P008100/1 - Deciphering the dominant drivers of contemporary relative sea-level change: Analysing sediment deposition and subsidence in a vulnerable mega-delta. Full details about this dataset can be found at https://doi.org/10.5285/ac5b28ca-e087-4aec-974a-5a9f84b06595
Default
Identification info
- Metadata Language
- English (en)
- Character set
- utf8
- Dataset Reference Date ()
- 2020-06-26
- Identifier
- doi: / 10.5285/ac5b28ca-e087-4aec-974a-5a9f84b06595
- Other citation details
- Darby, S.E., Hackney, C.R., Parsons, D.R., Tri, P.D.V. (2020). Water and suspended sediment discharges for the Mekong Delta, Vietnam (2005-2015). NERC Environmental Information Data Centre 10.5285/ac5b28ca-e087-4aec-974a-5a9f84b06595
- Maintenance and update frequency
- notPlanned
- Keywords
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- Mekong Delta
- Vietnam
- acoustic Doppler current profiler
- aDcp
- Sediment
- Limitations on Public Access
- otherRestrictions
- Other constraints
- no limitations
- Use constraints
- otherRestrictions
- Use constraints
- otherRestrictions
- Other constraints
- © University of Hull
- Use constraints
- otherRestrictions
- Other constraints
- © University of Southampton
- Use constraints
- otherRestrictions
- Other constraints
- © Can Tho University
- Use constraints
- otherRestrictions
- Other constraints
- If you reuse this data, you should cite: Darby, S.E., Hackney, C.R., Parsons, D.R., Tri, P.D.V. (2020). Water and suspended sediment discharges for the Mekong Delta, Vietnam (2005-2015). NERC Environmental Information Data Centre https://doi.org/10.5285/ac5b28ca-e087-4aec-974a-5a9f84b06595
- Spatial representation type
- textTable
- Topic category
-
- Environment
))
- Begin date
- 2005-01-01
- End date
- 2015-12-31
Distribution Information
- Data format
-
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Comma-separated values (CSV)
()
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Comma-separated values (CSV)
()
- Resource Locator
-
Download the data
Download a copy of this data
- Resource Locator
-
Supporting information
Supporting information available to assist in re-use of this dataset
- Resource Locator
-
Download the data
Download a copy of this data
- Resource Locator
-
Supporting information
Supporting information available to assist in re-use of this dataset
- Quality Scope
- dataset
- Other
- dataset
Report
- Dataset Reference Date ()
- 2010-12-08
- Statement
-
Each ADCP instruments acoustic backscatter signal was calibrated to observed suspended sediment concentrations (SSCs). These concentrations values were then matched to measured acoustic backscatter values (dB) from the depth at which each sample was taken to generate power law calibration curves.
To generate daily fluxes, the point specific ADCP fluxes were used to generate sediment ratings curves between sediment flux (kg/s) and discharge (m3/s). These ratings curves were then propagated over recorded daily discharge values measured by the Vietnamese hydrological agency to provide daily fluxes over the period of record.
Data collation was carried out in Excel. Data were provided as comma seperated value (csv) files for deposit into the EIDC.
Metadata
- File identifier
- ac5b28ca-e087-4aec-974a-5a9f84b06595 XML
- Metadata Language
- English (en)
- Character set
- ISO/IEC 8859-1 (also known as Latin 1)
- Resource type
- dataset
- Hierarchy level name
- dataset
- Metadata Date
- 2022-05-20T10:39:10
- Metadata standard name
- UK GEMINI
- Metadata standard version
- 2.3
