Delta-X: Bed and Suspended Sediment Grain Size, MRD, LA, USA, 2019-2021, V3

This dataset includes sediment concentration and grain size distribution measurements from suspended and bed sediment samples collected in the Atchafalaya River and Terrebonne Basins as part of the Delta-X Spring campaign between March 25 and April 2, 2021, and the Delta-X Fall campaign between August 17 and 22, 2021. In addition, ten samples were collected during a field campaign in October 2019. Samples were collected in the main channels and the interior of Mike Island in the Wax Lake Delta, Louisiana and at site CRMS0421 inside the Terrebonne Basin. Sediment samples were collected from a boat using a Van Dorn sampler (for suspended sediment samples) or a Ponar bed sampler (for bed samples). Suspended sediment samples were collected from a boat drifting at approximately the same velocity as the water flow. One sample was collected per drift. Bed samples were collected in a similar fashion. Data include measurements of sediment grain size distribution, total sediment concentration, water temperature, flow velocity, salinity, and depth. This Version 3 updates Version 2 to include data from more samples and reprocessed laser diffraction grain size distributions with optimized sediment optical properties. The data is provided in comma separated values (CSV) format.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated October 27, 2026, 02:01 (UTC)
Created April 1, 2025, 15:22 (UTC)
Identifier 10.3334/ORNLDAAC/2379
Modified 2026-10-19T22:16:06Z
Theme {"Earth Science"}
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id dd36dca8-8f32-4f4f-9463-48e1122ff51d
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
license https://www.usa.gov/government-works
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash 13e7c11df079f93a30ba340f60389381410cb69c8b69fe8820e7a6a39974931c
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -91.4523, "NorthBoundingCoordinate": 29.7044, "EastBoundingCoordinate": -90.82, "SouthBoundingCoordinate": 29.1715}]]
temporal 2019-10-25/2021-08-24