TITLE:
Deciphering of Space Images of the Inder Salt-Dome Upland in ENVI 4.7 Program
AUTHORS:
K. M. Akhmedenov, A. G. Koshym, R. Z. Zhumabekova
KEYWORDS:
Space Image; Inder Salt-Dome Uplift; Karst Relief; Exogenous Processes; Karst Processes; Relief Shapes; Basis of Erosion; Automated Deciphering; Vector Layer; Objects Classification; Object Classes; Landscapes Complex; Mapping
JOURNAL NAME:
International Journal of Geosciences,
Vol.5 No.3,
March
27,
2014
ABSTRACT: Space
images play an important role in the Earth study as they bring the main
information received from the Space Flyer Units (SFU) to help researchers.
Space images’ deciphering gives the opportunity to study the territory and to
plot different maps. On the basis of the space image obtained from Landsat 5TM
(30 m resolution, 01.09.2012 year), we managed to get a picture of the modern
relief of the northern part of Inder lake. When comparing the space image with
topographic maps of 1985, we succeeded to identify the dynamics of landforms
change on the studied area, what has been shown on the drawn map of the relief
of the Inder salt dome uplift. 14 classes, corresponding to a particular type
of terrain or to a landscape complex, have been distinguished on the studied
area. Inder salt dome uplift is a paradynamic conjugation, consisting of highly
karsted Inder Mountains corresponding to large diapir uplift, and of the Inder
Lake having a large ellipsoidal shape. Geomorphologically, the investigated
territory is located on the left bank of Zhaiyk River, and presents a salt dome
uplift in the form of a plateau-like hill raised above the surrounding surface
from 12 to 40 m. The maximum height reaches 42.5 m (g. Suatbaytau). The crest
of the Inder salt dome is composed of Low Permian sediments (rock salt with
anhydrite, potassiummagnesium salts), and has an area of about 210 km2.
Inder lake’s basin is represented by a tectonic depression, which is the local
basis of erosion and is a drainage place of the Inder uplift karstic water. The
lake area is 150 km2. Depending on the climatic conditions, the
water level can vary.