GSA Connects 2024 Meeting in Anaheim, California

Paper No. 68-1
Presentation Time: 1:40 PM

INCORPORATING NEAR-SURFACE GEOPHYSICAL IMAGING TECHNIQUES INTO BASIC SCIENCE RESEARCH ON ALPINE GLACIERS AND GLACIAL DEPOSITS


BAKER, Gregory, Physical & Environmental Sciences, Colorado Mesa University, 1100 North Avenue, Grand Junction, CO 81501-3122

Data for hypothesis testing related to alpine glaciers and glaciation is varied and crosses many disciplines. Research team building to incorporate highly-knowledgeable investigators among such wide-ranging areas of expertise was a well-known skill possessed by Dr. Ed Evenson and resulted in key publications related to glacial processes and landscapes. In addition to these broad-reaching key research avenues, however, a significant amount of much smaller questions were tackled by Dr. Evenson and his teams over the years. Near-surface geophysical data collected in Alaska and Wyoming—primarily on the Matanuska Glacier and on glaciogenic deposits near Pinedale, respectively—over several decades related to smaller scientific questions of glacial processes were a critical component of training for young geoscientists. Projects related to NSF’s Research Experiences for Undergraduates & Teachers Experiencing the Arctic, as well as smaller-budget projects, were founded on the trained-to-observe philosophy of Earth scientists (and glacial geologists in particular). Specifically, Dr. Evenson was a driving force in experiments related to glaciological features great & small based on the “I see it, now go explain it” credo. As a result, numerous near-surface geophysical datasets were generated to tackle such varied topics as: How thick is that outwash? Is that moraine ice-cored? Can glacier deformation be tracked in 3D? Is there basal ice down there? Are those boulders all on the surface, or are some buried? What is causing that soft-sediment deformation? Is that till on the outwash, or is the outwash on the till? A summary of published (and often unpublished) results of these and other questions will be presented.