Direct measurement of optical properties of glacier ice using a photon-counting diffuse LiDAR

Simple item page
dc.contributor.authorAllgaier, Markus
dc.contributor.authorCooper, Matthew G.
dc.contributor.authorCarlson, Anders E.
dc.contributor.authorCooley, Sarah W.
dc.contributor.authorRyan, Jonathan C.
dc.contributor.authorSmith, Brian J.
dc.date.accessioned2022-05-05T02:03:28Z
dc.date.available2022-05-05T02:03:28Z
dc.date.issued2022-04
dc.description11 pagesen_US
dc.description.abstractThe production of meltwater from glacier ice, which is exposed at the margins of land ice during the summer, is responsible for a large proportion of glacier mass loss. The rate of meltwater production from glacier ice is especially sensitive to its physical structure and chemical composition which combine to determine the albedo of glacier ice. However, the optical properties of near-surface glacier ice are not well known since most prior work has focused on laboratory-grown ice or deep cores. Here, we demonstrate a measurement technique based on diffuse propagation of nanosecond-duration laser pulses in near-surface glacier ice that enables the independent measurement of the scattering and absorption coefficients, allowing for a complete description of the processes governing radiative transfer. We employ a photon-counting detector to overcome the high losses associated with diffuse optics. The instrument is highly portable and rugged, making it optimally suited for deployment in remote regions. A set of measurements taken on Crook and Collier Glaciers, Oregon, serves as a demonstration of the technique. These measurements provide insight into both physical structure and composition of near-surface glacier ice and open new avenues for the analysis of light-absorbing impurities and remote sensing of the cryosphere.en_US
dc.identifier.citationAllgaier M, Cooper MG, Carlson AE, Cooley SW, Ryan JC, Smith BJ (2022). Direct measurement of optical properties of glacier ice using a photoncounting diffuse LiDAR. Journal of Glaciology 1–11. https://doi.org/10.1017/jog.2022.34en_US
dc.identifier.orcidhttps://orcid.org/0000-0002-2179-6250
dc.identifier.orcidhttps://orcid.org/0000-0002-0165-209X
dc.identifier.urihttps://doi.org/10.1017/jog.2022.34
dc.identifier.urihttps://hdl.handle.net/1794/27137
dc.language.isoenen_US
dc.publisherCambridge University Pressen_US
dc.rightsCreative Commons BYen_US
dc.subjectblue iceen_US
dc.subjectglaciological instruments and methodsen_US
dc.subjectice physicsen_US
dc.subjectremote sensingen_US
dc.titleDirect measurement of optical properties of glacier ice using a photon-counting diffuse LiDARen_US
dc.typeArticleen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
direct-measurement-of-optical-properties-of-glacier-ice-using-a-photon-counting-diffuse-lidar.pdf
Size:
1.49 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Name:
license.txt
Size:
2.22 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Earth Sciences Faculty Works
OA-APC Award Fund Winners Works