Wyniki wyszukiwania - BazTech

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Extraction of urban construction development with using Landsat satellite images and geoinformation systems

Arifjanov Aybek M., Akmalov Shamshodbek B., Samiev Luqmon N.

Journal of Water and Land Development

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2021

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no. 48

65--69

EN

In recent times there have been many changes on Earth, which have appeared after anthropogenic impact. Finding solutions to problems in the environment requires studying the problems quickly, make proper conclusions and creating safe and useful measures. Humanity has always had an effect on the environment. There can be many changes on the Earth because of direct and indirect effects of humans on nature. Determining these changes at the right time and organizing meas-urements of them requires the creation of quick analysing methods. This development has improved specialists’ interest for remote sensing (RS) imagery. Moreover, in accordance with analysis of literature sources, agriculture, irrigation and ecology have the most demand for RS imagery. This article is about using geographic information system (GIS) and RS technologies in cadastre and urban construction branches. This article covers a newly created automated method for the calculation of artificial surface area based on satellite images. Accuracy of the analysis is verified according to the field experiments. Accuracy of analysis is 95%. According to the analysis from 1972 to 2019 artificial area enlargement is 13.44%. This method is very simple and easy to use. Using this data, the analysis method can decrease economical costs for field measures. Using this method and these tools in branches also allows for greater efficiency in time and resources.

2

The Impact of Tsunami on Mangrove Spatial Change in Eastern Coastal of Biak Island, Indonesia

Hamuna Baigo, Kalor John Dominggus, Tablaseray Vivia Elvanny

Journal of Ecological Engineering

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2019

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Vol. 20, nr 3

1--6

EN

This study was conducted to find out how large was the impact of the tsunami incident of 1996 on the mangrove spatial change and also to understand the distribution and level of mangrove density before and after tsunami in Biak Island (Oridek District and East Biak District), Biak Numfor Regency, Indonesia. In order to determine the condition of mangrove before tsunami, landsat 5 TM satellite image acquisition of July 6, 1994 and landsat 7 ETM+ satellite image acquisition of August 31, 2000 were used. The information about the distribution and extent of mangroves was obtained by analyzing the spectral values based on color composite image (RGB 453) and NDVI analysis. Overlay map of the result satellite image interpretation was used to learn the change of mangrove spatial extent area due to tsunami. The result showed that the mangrove area before the tsunami was 286.83 Ha (high density 36.63 Ha, medium density 140.60 Ha and small density 109.60 Ha), meanwhile the mangrove extent area after the tsunami was 102.51 Ha (high density 24.39 Ha, medium density 22,86 Ha and small density 55.26 Ha). The mangrove conditions before tsunami were crucial to the impact of mangrove area degradation directly. The change of mangrove spatial extent into two districts after tsunami occurred in 1996 amounts to 184.32 Ha, which it approximately 202.50 Ha mangrove being lost and the addition of mangrove in the new area are 18.18 Ha. The tsunami that occurred in 1996 affected the coastal ecosystems, especially the mangrove ecosystems in Oridek District.

3

Kartowanie geologiczne z wykorzystaniem zdjęć satelitarnych Landsat

Graniczny M.

Biuletyn Państwowego Instytutu Geologicznego

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2002

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nr 402

27-50

PL

W pracy przedstawiono przykłady wykorzystania zdjęć satelitarnych Landsat do rozpoznania bądź weryfikacji budowy geologicznej obszarów o skrajnie odmiennych warunkach geograficznych, geologicznych i klimatycznych. Prezentowane materiały obejmują tereny położone w obrębie trzech kontynentów. Dotyczą wschodniej Kuby, południowo-zachodniego Egiptu, oraz północno-wschodniej Polski (Pojezierze Suwalskie). W każdym przypadku wykazano dużą przydatność zdjęć Landsat dla kartowania geologicznego i otrzymano nowe, istotne informacje z zakresu tektoniki, litologii i geomorfologii.

EN

In this paper examples of the Landsat satellite images applications are presented for identification or verification of geological structure, in various geographical, geological and climatic conditions, from three continents. These examples concerned: eastern Cuba, southwestern Egypt and northeastern Poland (Suwałki Lakeland). In each case utility of Landsat satellite images for geological mapping was confirmed. The new important information regarding tectonics, lithological conditions and geomorphology were achieved.