GNSS positions of time-lapse cameras in Johns Hopkins Inlet, Glacier Bay National Park, Alaska, 2021 ...

• Main Author: Amundson, Jason
• Format: Dataset
• Language: English
• Published: Arctic Data Center 2022
• Subjects: Survey; Logging; Calving; Glacier Bay; John Hopkins; Cameras; Hopkins Inlet; glacier; glaciers; Tidewater; Alaska
• Online Access: https://dx.doi.org/10.18739/a23b5w926; https://arcticdata.io/catalog/view/doi:10.18739/A23B5W926

Tidewater glacier fjords are highly dynamic environments that are affected by several glaciological and oceanographic processes: (i) subglacial discharge creates upwelling plumes that drive estuarine circulation and promote submarine melting of glaciers and icebergs, (ii) iceberg calving, which is affected by submarine melting, is a stochastic energy source that mixes near-glacier waters and produces waves that crash on shore and cause icebergs to capsize, and (iii) motion of icebergs and fjord waters are affected by winds, tides, and subglacial discharge. Numerous species reside in tidewater glacier fjords, including harbor seals, which seasonally aggregate in fjords and use ice habitat for critical life functions including pupping, molting, and foraging. Seals that haul-out on icebergs during the pupping and molting seasons take longer and deeper dives for feeding than those that use terrestrial haul-outs, but may acquire higher quality food. Additionally, icebergs do not flood during high tide, which ...