Poster Number 123
See more from this Division: General Discipline Sessions
See more from this Session: Quaternary Geology (Posters)
Abstract:
The death of the forests may be due to multiple causes, including overriding by ice, proglacial sedimentation and possibly crustal deformation by ice loading. Our data indicate trees were killed along a 5 km flow line within a few decades, which suggests rapid ice expansion rates of about 2 km per decade. Such a rapid rate of advance is consistent with Tlingit legend of an ice advance forcing them to flee their village believed to be located near the 1704 margin in the Bartlett Cove area.
In addition, Tlingit legends report two years of continuous winter conditions about the time of the Tlingit-evicting LIA ice advance. Interestingly, our tree-ring records show extreme cold between 1752 and 1754, possibly reflecting this event. Cooling during these years is not seen in other coastal Alaska series and thus may be a local effect amplified by the expanding Glacier Bay Icefield.
See more from this Division: General Discipline Sessions
See more from this Session: Quaternary Geology (Posters)