Identification

Title

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

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. Full details about this dataset can be found at https://doi.org/10.5285/ac5b28ca-e087-4aec-974a-5a9f84b06595

Resource type

dataset

Resource locator

https://data-package.ceh.ac.uk/data/ac5b28ca-e087-4aec-974a-5a9f84b06595

name: Download the data

description: Download a copy of this data

function: download

https://data-package.ceh.ac.uk/sd/ac5b28ca-e087-4aec-974a-5a9f84b06595.zip

name: Supporting information

description: Supporting information available to assist in re-use of this dataset

function: information

Unique resource identifier

code

https://catalogue.ceh.ac.uk/id/ac5b28ca-e087-4aec-974a-5a9f84b06595

codeSpace

doi:

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

environment

Keywords

Keyword set

keyword value

Mekong Delta

Vietnam

acoustic Doppler current profiler

aDcp

Sediment

Geographic location

West bounding longitude

104.277

East bounding longitude

107.331

North bounding latitude

11.146

South bounding latitude

8.027

Temporal reference

Temporal extent

Begin position

2005-01-01

End position

2015-12-31

Dataset reference date

date type

publication

effective date

2020-06-26

Frequency of update

notPlanned

Quality and validity

Lineage

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.

Conformity

Conformity report

specification

title

Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

reference date

date type

publication

effective date

2010-12-08

degree

explanation

Data format

name of format

Comma-separated values (CSV)

version of format

Constraints related to access and use

Constraint set

Limitations on public access

Constraint set

Limitations on public access

Constraint set

Limitations on public access

Constraint set

Limitations on public access

Constraint set

Limitations on public access

Constraint set

Limitations on public access

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

author

Metadata on metadata

Metadata point of contact

organisation name

Environmental Information Data Centre

full postal address

Lancaster Environment Centre, Library Avenue, Bailrigg

Lancaster

LA1 4AP

email address

info@eidc.ac.uk

responsible party role

pointOfContact

Metadata date

2021-06-25T18:34:13

Metadata language

eng