Revision for U.S. Geological Survey data release: Ruppel, C.D., Hutchinson, D.R., Lachenbruch, A.H., and Hall, J.K., 2019, Thermal data and navigation for T-3 (Fletcher's) Ice Island Arctic Ocean heat flow studies, 1963-73 (ver. 1.1, December 2022): USGS data release, https://doi.org/10.5066/P97EPU2F. --------------------------------------- Version 1 posted online July 10, 2019 --------------------------------------- Revised and reposted, December 2022 as version 1.1 Changes in version 1.1: 1) The data for 'Radiogenic heat content for selected cores recovered during T-3 Ice Island heat flow operations in the Arctic Ocean, 1963-74' was modified to correct one latitude value in both the CSV and XLSX formats of the data, available from the ScienceBase landing page https://www.sciencebase.gov/catalog/item/5d10eb70e4b0941bde55021a. The dataset filenames were modified to reflect the new version. 2) The metadata updates include modifying the edition, title, publication date, other citation details, and distribution to reflect version 1.1. Additionally, a new process step was added which documents the changes for version 1.1. Other smaller changes were made in the metadata file to document software versions and filename changes.