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| Titel |
Assessing the complexity of topographic mass in complex terrains |
| VerfasserIn |
Azimkhan Kurmankozhayev, Vaclav Nemec, Edil Sarybaev |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250094391
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| Publikation (Nr.) |
 EGU/EGU2014-9799.pdf |
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| Zusammenfassung |
| To assess the structure of terrain more objectively it is necessary to supplement and clarify
the available characteristics with a number of numerical statistical indicators and formulas
that reflect the actual links between separate features of terrain. Results from analysis of
traditional variability assessment methods for characteristics of georesources allow
concluding that a characteristic’s variability usually has oscillatory and wavelike geometric
image in the form of broken, polygonal, zigzagging, polyhedral and, less frequently, regular
geometric shapes, defined by deviation amplitude and period of irregularities. It is established
that variability cannot be evaluated with one universal indicator since variability consists of a
random and a regular component, thus it is considered reasonable to assess the
characteristic’s variability depending on current mining and geometrical tasks and by stages
of georesources development. The recommended topographic terrain mass complexity
assessment method is based on the leading concept of using properties of specific
anti-entropy that, unlike regular entropy, allows accounting for changes in total number of
component elements in stable populations for the topographic terrain mass. Concept of
utilizing value of specific anti-entropy, widely used in information theory, is taken as an
assessment criterion for integral complexity of topographic terrain mass. Modification of
specific anti-entropy formula, as applied to substance of formation of the georesource
development target’s topographic mass integral complexity, is based on qualimetric
model of its assessment. Essence of the model comes down to determining the
topographic mass complexity using the topographic mass structure uncertainty measure,
assessed using the quantity of heterogeneous morphometric elements contained in the
topographic surface of terrain. The main basic reference value in qualimetric model
of the topographic terrain mass complexity is the information measure – amount
of information (H). The recommended method is characterized by accuracy and
differentiation of result generation; it can be used during survey, formation, preparation and
parameterization of topocartographic products, and taken as a starting basis for solving
problems of measurement density optimization and land volume parameters calculation
efficiency. |
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