EVALUATION OF COASTLINE LONG-TERM CHANGES IN TONEKABON FROM 1984 TO 2010

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MOTEVALLI S.; Hashemi Jirdahi S.Y.; Alijani M.A.

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Seminar Paper

Paper Information

Seminar: INTERNATIONAL CONFERENCE ON COASTS, PORTS AND MARINE STRUCTURES (ICOPMAS) PORTS & MARITIME ORGANIZATION
Year:2012 | Issue:10

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Title

EVALUATION OF COASTLINE LONG-TERM CHANGES IN TONEKABON FROM 1984 TO 2010

Author(s)

MOTEVALLI S. | Hashemi Jirdahi S.Y. | Alijani M.A.

Keywords

COASTLINE CHANGES

TM AND ETM+ GAUGES

SPATIAL REVELATION

TONEKABON TOWNSHIP

Abstract

THE SUBJECT OF COASTLINE CHANGES, BECAUSE OF SEAWATER REGRESSION AND PROCESSION DURING THE RECENT CENTURY, HAS RAISED MORE ATTENTION TO SOCIAL, ECONOMIC AND ENVIRONMENTAL ISSUES IN TONEKABON COASTAL AREA AND INVOLVED SET OF PROBLEMS FOR ENVIRONMENT AND REGION’S HUMAN HABITATIONS. IN THE PRESENT RESEARCH, SOME COMMON METHODS OF COASTLINE CHANGES DETERMINATION USING REMOTE SENSING AND GIS AS WELL AS SATELLITE IMAGES ARE APPLIED FOR INVESTIGATING COASTLINE CHANGES IN TONEKABON. BY SELECTING LANDSAT SATELLITE IMAGES OF TM, ETM, AND ETM+ FOR YEARS 1984, 2000 AND 2010, THE GEOMETRIC AND RADIOMETRIC ERRORS ARE CORRECTED ON THE PREPROCESSING STAGE. ON THE IMAGE PROCESSING STAGE, BAND 5 WAS CHOSEN AS THE BEST BAND FOR DIAGNOSING THE BORDER BETWEEN LAND AND WATER AND THE CONTRAST IMPROVEMENT METHOD TOGETHER WITH THRESHOLDING AND EDGE ENHANCEMENT FILTER ARE APPLIED AS THE BEST SEPARATING METHODS. THE RESULTS, IN SHAPE OF RASTER LAYERS, REVEAL THAT THE COASTLINE HAS GOT RIDGED FROM 1984 TOWARD 2000 AND 2010. THEN, RASTER LAYERS WERE TRANSFERRED TO A VECTOR AND THE SPATIAL CHANGES OF COASTLINE WERE MEASURED IN 41 SPOTS WITH EQUAL DISTANCE OF 1000 METERS. THE RESULTS ALSO REVEAL THAT THE AVERAGE COASTLINE MOVEMENT DURING 1984 AND 2000 WAS 75.2 METERS AND WATER HAS PROGRESSED TOWARDS COAST. THE AVERAGE CHANGE RATE DURING 2000 AND 2010 WAS 32.9, DURING THESE YEARS THE STUDY COASTAL AREA FACED WATER REGRESSION AND LAND ENHANCEMENT IN MOST OF ITS PARTS AND THE WATER PROGRESSION HAPPENED ONLY IN SOME PLACES BUT WITH SMALL MOVEMENT RATE. IN ORDER TO EVALUATE THE ACCURACY OF METHODS APPLIED FOR COASTLINE EXTRACTION AND MEASURING ITS CHANGES, FIELD STUDIES WERE DONE WHICH SOME OF THE ISSUES SUCH AS STRUCTURES DESTRUCTION BY WAVES, DROWNING SOME OF THE STRUCTURES, DOING STRUCTURE PROTECTION PROJECTS TO FACE SEA PROGRESSION, AND ETC. APPROPRIATELY PROOF THE METHODOLOGY ACCURACY OF THE PRESENT RESEARCH.

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APA: Copy

MOTEVALLI, S., Hashemi Jirdahi, S.Y., & Alijani, M.A.. (2012). EVALUATION OF COASTLINE LONG-TERM CHANGES IN TONEKABON FROM 1984 TO 2010. INTERNATIONAL CONFERENCE ON COASTS, PORTS AND MARINE STRUCTURES (ICOPMAS). SID. https://sid.ir/paper/907668/en

Vancouver: Copy

MOTEVALLI S., Hashemi Jirdahi S.Y., Alijani M.A.. EVALUATION OF COASTLINE LONG-TERM CHANGES IN TONEKABON FROM 1984 TO 2010. 2012. Available from: https://sid.ir/paper/907668/en

IEEE: Copy

S. MOTEVALLI, S.Y. Hashemi Jirdahi, and M.A. Alijani, “EVALUATION OF COASTLINE LONG-TERM CHANGES IN TONEKABON FROM 1984 TO 2010,” presented at the INTERNATIONAL CONFERENCE ON COASTS, PORTS AND MARINE STRUCTURES (ICOPMAS). 2012, [Online]. Available: https://sid.ir/paper/907668/en

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