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Multi-Temporal investigation of the Boulder Clay Glacier and Northern Foothills (Victoria Land, Antarctica) by integrated surveying techniques

TitleMulti-Temporal investigation of the Boulder Clay Glacier and Northern Foothills (Victoria Land, Antarctica) by integrated surveying techniques
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2019
AuthorsUrbini, S., Bianchi-Fasani G., Mazzanti P., Rocca A., Vittuari L., Zanutta A., Girelli V.A., Serafini M., Zirizzotti A., and Frezzotti M
JournalRemote Sensing
Volume11
ISSN20724292
KeywordsAntennas, Deformation, Geodetic satellites, Geological surveys, Geomorphological studies, Geophysical measurements, Geophysical prospecting, Geophysics, glacier dynamics, Global positioning system, Gravel, Ground penetrating radar (GPR), Ground penetrating radar systems, Interferometry, Lakes, Multi-temporal remote sensing, Photogrammetry, Remote sensing, SAR interferometry, Semi permanents, Space-based radar, Stereo image processing, synthetic aperture radar, Synthetic aperture radar interferometry
Abstract

The paper aims to detect the main changes that occurred in the area surrounding the Mario Zucchelli Station (MZS) through analysis of multi-temporal remote sensing integrated by geophysical measurements. Specific attention was directed at realizing an integrated geomorphological study of the Boulder Clay Glacier, a partially debris-covered glacier belonging to the Northern Foothills (Victoria Land, Antarctica). This area was recently chosen as the location for the construction of a new semi-permanent gravel runway for MZS logistical airfreight operations. Photogrammetric analysis was performed by comparing three historical aerial photogrammetric surveys (carried out in 1956, 1985, and 1993) and Very High Resolution (VHR) GeoEye-1 satellite stereo-image coverage acquired in 2012. The comparison of geo-referenced orthophoto-mosaics allowed the main changes occurring in some particular areas along the coast nearby MZS to be established. Concerning the study of the Boulder Clay Glacier, it has to be considered that glaciers and moraines are not steady-state systems by definition. Several remote sensing and geophysical investigations were carried out with the main aim of determining the general assessment of this glacier: Ground Penetrating Radar (GPR); Geodetic Global Positioning System (GPS) network; multi-temporal satellite Synthetic Aperture Radar (SAR) interferometry. The analysis of Boulder Clay Glacier moraine pointed out a deformation of less than 74 mm y-1 in a time span of 56 years, value that agrees with velocity and deformation data observed by GPS and InSAR methods. The presence of unexpected brine ponds at the ice/bedrock interface and the deformation pattern observed in the central part of the moraine has to be monitored and studied, especially under the long-term maintenance of the future runway. © 2019 by the authors.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85068188653&doi=10.3390%2frs11121501&partnerID=40&md5=a71f62da6e650c642ac5735d17bb3351
DOI10.3390/rs11121501
Citation KeyUrbini2019