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Description

This dataset provides in situ measurements of beam attenuation coefficient at 670 nm, average suspended particle size, particle size distribution, and water temperature in surface waters (~0.5 m) of the Atchafalaya and Terrebonne Basins on the southern coast of Louisiana. The field studies were conducted in the Spring and Fall in support of the Delta-X mission and include measurements made in 2021 during March 25 - April 22 and August 14 - September 24. Measurements were made using the Sequoia Scientific Laser In-Situ Scattering and Transmissometer instrument (LISST-200X) in multiple channels of varying width (from a few meters to >100m), near Delta-X intensive study sites and in open bays and lakes and at a few locations in the nearshore Gulf of Mexico. The data are provided in comma-separated (CSV) format.

Product Summary

Platforms
FIELD SURVEYS
Instruments
TRANSMISSOMETERS
Spatial Extent

N: 29.7545 S: 28.7913 E: -90.5697 W: -91.4676

Location
LOUISIANA
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2021-03-25 to 2021-09-24
Data Partner
THE OAK RIDGE NATIONAL LABORATORY (ORNL) DISTRIBUTED ACTIVE ARCHIVE CENTER (DAAC) (ORNL_DAAC)
Concept ID
C2515316269-ORNL_CLOUD
Data State
COMPLETE
Number of Files/Granules
4
Processing Level
3
Published
Updated
Science Keywords
Surface Water Processes/Measurements ,
Suspended Solids ,
Attenuation/Transmission

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Fichot, C. G., & Harringmeyer, J. (2022). Delta-X: In situ Beam Attenuation and Particle Size from LISST-200X, 2021 (Version 2). ORNL Distributed Active Archive Center. https://doi.org/10.3334/ORNLDAAC/2077 Date Accessed: 2026-05-01

Documents

Publications Citing This Dataset

Filters
Title Year Author Topic
Delta-X: An airborne remote sensing framework to calibrate hydrodynamic Simard, Marc, Jones, Cathleen E., Twilley, Robert R., Castaneda-Moya, Edward, Fagherazzi, Sergio, Fichot, Cedric G., Lamb, Michael P., Passalacqua, Paola, Pavelsky, Tamlin M., Thompson, David R., Belhadj-aissa, Saoussen, Biswas, Pradipta, Christensen, Alexandra, Cortese, Luca, Denbina, Michael, Donatelli, Carmine, Flores, Sarah, Fontenot, Andy, Harringmeyer, Joshua P., Jensen, Daniel, Mallard, John, Nghiem, Justin, Oliver-Cabrera, Talib, Payandeh, Ali Reza, Rovai, Andre S., Solohin, Elena, Soloy, Antoine, Varugu, Bhuvan, Wang, Dongchen, Wright, Kyle, Zhang, Xiaohe, Zheng, Yang Hydroperiod, Inundation, Water Channels, Surface Water Processes/Measurements, Estuary, Water Depth, Coastal Bathymetry, Rivers/Stream, Wetlands, Deltas, Digital Elevation/Terrain Model (DEM), Coastal Elevation, Wetlands, Stage Height, Salt Marsh, Coastal, Biomass, Wetlands, Forests, Suspended Solids, Terrain Elevation, Primary Production, Vegetation Species, Plant Characteristics, Sedimentation, Accretion, Isotopic Age, Soil Horizons/Profile, Infrared Radiance, Sedimentation, Sediments, VIEWING GEOMETRY, Vegetation Cover, Geolocation, Visible Radiance, Sediment Transport, Sediment Transport, Attenuation/Transmission, Vegetation Fraction, Sea Level Changes, REFLECTED INFRARED, VISIBLE IMAGERY, Reflectance, Isotopes, Nutrients, Nutrient Cycling, Isotope Ratios, Sediment Transport, Sediment Transport, Nitrogen, Organic Matter, Soil Bulk Density, Carbon, Potassium, Nitrogen, Dominant Species, Discharge/Flow, Soil Rooting Depth, Salinity, Sediment Composition, Organic Matter, Solids, Surface Water Chemistry, Soil Organic Carbon (SOC), Sedimentation, Water Depth, Water Characteristics, Turbidity, Water Temperature, Chlorophyll Concentrations, Sedimentation
A hyperspectral view of the nearshore Mississippi River Delta: Characterizing suspended particles in coastal wetlands using imaging spectroscopy Harringmeyer, Joshua P., Ghosh, Nilotpal, Weiser, Matthew W., Thompson, David R., Simard, Marc, Lohrenz, Steven E., Fichot, Cedric G. Surface Water Processes/Measurements, Suspended Solids, Attenuation/Transmission, Deltas, Digital Elevation/Terrain Model (DEM), Coastal Elevation, Water Characteristics, Turbidity, Water Temperature, Estuary, Chlorophyll Concentrations, Organic Matter, Solids, Surface Water Chemistry
Testing floc settling velocity models in rivers and freshwater wetlands Nghiem, Justin A., Li, Gen K., Harringmeyer, Joshua P., Salter, Gerard, Fichot, Cedric G., Cortese, Luca, Lamb, Michael P. Surface Water Processes/Measurements, Suspended Solids, Attenuation/Transmission
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