Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2022 May 30;94(suppl 1):e20210815.
doi: 10.1590/0001-3765202220210815. eCollection 2022.

A firn dielectric log depth-tied to an ice core on the West Antarctica Ice Sheet

Jandyr M Travassos  1 , Saulo S Martins  2 , Jefferson C Simões  3   4
Affiliations
Free article

A firn dielectric log depth-tied to an ice core on the West Antarctica Ice Sheet

Jandyr M Travassos et al. An Acad Bras Cienc. .
Free article

Abstract

We have estimated a 1-D permittivity model from a 100m long variable offset GPR in the West Antarctic ice sheet. That model inherits the inaccuracies in depth from the velocity model, which should be corrected before attempting to correlate it with the density log from a close-by borehole. We performed that correction by aligning a synthetic ice density derived from a Maxwell Garnett two-phase mixture model to the ice core density measurements through dynamic time warping. The shifts to bring the permittivity estimates to their proper depths suggest a direct correlation of radar-derived data to borehole depths may suffer from noise to an unknown degree. The present methodology is within reach of a standard GPR survey, having at least one variable offset gather.

PubMed Disclaimer

Similar articles

See all similar articles

LinkOut - more resources