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Water and suspended sediment discharges for the Mekong Delta, Vietnam (2005-2015)

Water and suspended sediment discharges for the Mekong Delta, Vietnam (2005-2015)
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
NERC Environmental Information Data Centre
Darby, Stephen
4c3e1c76-d404-4ff3-86f8-84e42fbb7970
Hackney, Christopher
bc99c3e8-243c-4933-9346-46c707e36e0b
Parsons, Daniel R.
59f2673a-9c73-437a-8865-52d52830a3aa
Van, Tri P.
678c411a-07a4-47a8-b96e-e97d087fc472
Darby, Stephen
4c3e1c76-d404-4ff3-86f8-84e42fbb7970
Hackney, Christopher
bc99c3e8-243c-4933-9346-46c707e36e0b
Parsons, Daniel R.
59f2673a-9c73-437a-8865-52d52830a3aa
Van, Tri P.
678c411a-07a4-47a8-b96e-e97d087fc472

Darby, Stephen, Hackney, Christopher, Parsons, Daniel R. and Van, Tri P. (2020) Water and suspended sediment discharges for the Mekong Delta, Vietnam (2005-2015). NERC Environmental Information Data Centre doi:10.5285/ac5b28ca-e087-4aec-974a-5a9f84b06595 [Dataset]

Record type: Dataset

Abstract

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

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Published date: 26 June 2020

Identifiers

Local EPrints ID: 441873
URI: http://eprints.soton.ac.uk/id/eprint/441873
PURE UUID: 6a53b121-c214-49e8-a418-49d68f071110
ORCID for Stephen Darby: ORCID iD orcid.org/0000-0001-8778-4394

Catalogue record

Date deposited: 01 Jul 2020 16:30
Last modified: 02 Jul 2020 00:26

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Contributors

Creator: Stephen Darby ORCID iD
Creator: Christopher Hackney
Creator: Daniel R. Parsons
Creator: Tri P. Van

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