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Photogrammetrical Investigations of the Antarctic Coast
Olexandr Dorozhynskyy,
Volodymyr Glotov
National University “Lvivska Politechnica” , Lviv, Ukraine
Abstract
Changes of the Antarctica coast and the contiguous islands covered
with the ice occur in the time with different rate and depend from whole
range of
factors, foremost from climatic environment. Determination of such quantitative
changes,
in other words the changes of surface topography, can be effectively solved
by
photogrammetric methods.
Authors have proposed the conception of the navigation-digital photogrammetry
(O. Dorozhynskyy, 1997) and its application for concrete physiographic conditions.
Itis developed the technology of the terrestrial navigation-digital photogrammetry
which based on the use of digital camera (for obtaining of the digital images
of the shore line and glaciers), GPS-device (fixation of the spatial location
of the surveying points and investigated objects points) and digital photogrammetric
stations (creation of ortophotomaps of the shore line and frontal plans of
the rocky shores).
Photogrammetric method has been completely tested in the field conditions
(V.Glotov, 2002,2003) during two seasonal Antarctic expeditions on Ukrainian
station “Academic
Vernadskyy”. There have been produced about 1200 digital images which
give rich materials for further researches.
The following previous results has been obtained:
- fotogrammetric method of investigation of the kinematic processes (changes of ice cover and deformation of the shore line of Antarctic coast) is effective, objective and precise tool for quantitative evaluation of changes on such territories;
- creation of digital cartographic materials is a good basement for application of GIS-technologies for the analysis of spatial changes and systematic storage of data about kinematics of phenomenon will allow for direction of other branches to obtain the information for solution of their specific tasks, namely forecasting of glaciers changes.
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