Assessment of surface water pollutant models of estuaries and coastal zone of Quang Ninh – Hai Phong using Spot-5 images

• Autorzy: Ke L. C. , Van Trang H. T. , Liem V. H. , Tuong T. N. , Duyen P. T.

Identyfikatory

DOI

10.1515/geocart-2015-0004

Warianty tytułu

PL

Ocena modeli zanieczyszczeń wód powierzchniowych w ujściach rzek i strefy przybrzeżnej Quang Ninh – Hai Phong przy wykorzystaniu obrazów Spot-5

• Języki publikacji: EN

Abstrakty

EN

The coastal zone and estuaries of Quang Ninh and Hai Phong have great potential not only for economic development but also for protection and conservation of biodiversity and ecosystem. Nowadays, due to industrial, agricultural and anthropogenic activities signs of water pollution in the region have been found. The level of surface water pollution can be determined by traditional methods through observatory stations. However, a traditional approach to determine water contamination is discontinuous, and thereby makes pollution assessment of the entire estuary very difficult. Nowadays, remote sensing technology has been developed and widely applied in many fields, for instance, in monitoring water environments. Remote sensing data combined with information from in-situ observations allow for extraction of polluted components in water and accurate measurements of pollution level in the large regions ensuring objectivity. According to results obtained from Spot-5 imagery of Quang Ninh and Hai Phong, the extracted pollution components, like BOD, COD and TSS can be determined with the root mean square error, the absolute mean error and the absolute mean percentage error (%): ±4.37 (mg/l) 3.86 (mg/l), 27%; ±55.32 (mg/l), 48.30 (mg/l), 14%; and ±32.90 (mg/l), 23.38 (mg/l), 28%; respectively. Obtained outcomes guarantee objectivity in assessing water contaminant levels in the investigated regions and show the advantages of remote sensing applications in Resource and Environmental Monitoring in relation to Water – Air – Land.

PL

Strefa przybrzeżna i ujścia rzek w Quang Ninh – Hai Phong ma potencjał do rozwoju gospodarczego i ochrony różnorodności biologicznej i ekosystemu. Ostatnio stwierdzono tam wiele oznak zanieczyszczenia wody. Poziom zanieczyszczenia wód powierzchniowych może być określany na stacjach obserwacyjnych metodami tradycyjnymi, jednak znacznie szybsze i dokładniejsze jest wykorzystanie metod teledetekcyjnych. Analiza obrazów Spot-5 w Quang Ninh – Hai Phong umożliwiła stwierdzenie obecności różnych zanieczyszczeń, w tym BOD, COD i TSS ze średnim błędem kwadratowym, średnim błędem absolutnym i średnim błędem względnym odpowiednio: ± 4.37 (mg/l), 3.86 (mg/l), 27%; ± 55.32 (mg/l), 48.30 (mg/l), 14%; ± 32.90 (mg/l), 23.38 (mg/l), 28%. Otrzymane wyniki gwarantują obiektywizm przy ocenie poziomu zanieczyszczeń w badanych regionach i pokazują korzyści zastosowań teledetekcji w monitoringu zasobów i środowiska w odniesieniu do wody – powietrza – terenu.

Słowa kluczowe

EN

estuarine; pollution; BOD; COD; TSS

PL

zanieczyszczenia; wody powierzchniowe; metoda teledetekcyjna

• Wydawca: Komitet Geodezji PAN
• Czasopismo: Geodesy and Cartography
• Rocznik: 2015
• Tom: Vol. 64, no. 1
• Strony: 29--42
• Opis fizyczny: Bibliogr. 15 poz., rys., tab., wykr.

Twórcy

autor

Ke L. C.

• Vietnam Society for Surveying, Mapping and Remote Sensing, 387 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam

autor

Van Trang H. T.

• Department of National Remote Sensing, 108 Chua Lang Str., Dong Da, Hanoi Vietnam

autor

Liem V. H.

• Department of National Remote Sensing, 108 Chua Lang Str., Dong Da, Hanoi Vietnam

autor

Tuong T. N.

• Department of National Remote Sensing, 108 Chua Lang Str., Dong Da, Hanoi Vietnam

autor

Duyen P. T.

• Ministry of Public Security

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