Browsing Bergen Open Research Archive by Author "Koestner, Daniel Warren"
Now showing items 1-6 of 6
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Measurements of the inherent optical properties of aqueous suspensions of microplastics
Koestner, Daniel Warren; Foster, Robert; El-Habashi, Ahmed; Cheatham, Shea Ann (Journal article; Peer reviewed, 2024)Libraries of inherent optical properties (IOPs) of microplastics are sparse, yet they are essential for the development of optical techniques to detect and quantify microplastics in the ocean. In this study, we describe ... -
A Multivariable Empirical Algorithm for Estimating Particulate Organic Carbon Concentration in Marine Environments From Optical Backscattering and Chlorophyll-a Measurements
Koestner, Daniel Warren; Stramski, Dariusz; Reynolds, Rick A. (Journal article; Peer reviewed, 2022-08-12)Accurate estimates of the oceanic particulate organic carbon concentration (POC) from optical measurements have remained challenging because interactions between light and natural assemblages of marine particles are complex, ... -
Neural network approach for correction of multiple scattering errors in the LISST-VSF instrument
Ugulen, Håvard Stavn; Koestner, Daniel Warren; Sandven, Håkon Johan; Hamre, Børge; Kristoffersen, Arne Skodvin; Sætre, Camilla (Journal article; Peer reviewed, 2023)The LISST-VSF is a commercially developed instrument used to measure the volume scattering function (VSF) and attenuation coefficient in natural waters, which are important for remote sensing, environmental monitoring and ... -
On the Potential for Optical Detection of Microplastics in the Ocean
Koestner, Daniel Warren; Foster, Robert; El-Habashi, Ahmed (Journal article; Peer reviewed, 2023) -
Optical Insight Into Riverine Influences on Dissolved and Particulate Organic Carbon in a Coastal Arctic Lagoon System
Catipovic, L.; Longnecker, K.; Okkonen, S.R.; Koestner, Daniel Warren; Laney, S.R. (Journal article; Peer reviewed, 2023)Arctic coastal margins receive organic material input from rivers, melted sea ice, and coastal erosion, phenomena that are all undergoing changes related to global climate. The optical properties of coastal Arctic waters ... -
Pixelwise immersion factor calibration for underwater hyperspectral imaging instruments
Liu, Hongbo; Summers, Natalie Maria; Chen, Yi-Chun; Løvås, Håvard Snefjellå; Johnsen, Geir; Koestner, Daniel Warren; Sætre, Camilla; Hamre, Børge (Journal article; Peer reviewed, 2024)In situ spectral reflectance initially captured at high spatial resolution with underwater hyperspectral imaging (UHI) is effective for classification and quantification in oceanic biogeochemical studies; however, the ...