The Inner Area Change Detection in Pak Panang Bay Before and After the Operation of the Uthokawiphatprasit Watergate using Aerial Photographs and Geographic Information System
This study investigates coastal changes in Pak Panang Bay, Nakhon Si Thammarat Province before and after the operation of the Uthokawiphatprasit Watergate over the Pak Panang River by using aerial photographs and geographic information system techniques. The aerial map on 1:15,000 scale produced by...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Walailak University
2011-12-01
|
| Series: | Walailak Journal of Science and Technology |
| Subjects: | |
| Online Access: | http://wjst.wu.ac.th/index.php/wjst/article/view/158 |
| _version_ | 1818597011571605504 |
|---|---|
| author | Pipop PRABNARONG Suthira THONGKAO |
| author_facet | Pipop PRABNARONG Suthira THONGKAO |
| author_sort | Pipop PRABNARONG |
| collection | DOAJ |
| description | This study investigates coastal changes in Pak Panang Bay, Nakhon Si Thammarat Province before and after the operation of the Uthokawiphatprasit Watergate over the Pak Panang River by using aerial photographs and geographic information system techniques. The aerial map on 1:15,000 scale produced by The Royal Thai Survey Department in 1974 was compared to the aerial photographs acquired in 1995, 1999 and 2003. The results revealed that from 1974 to 2003, the inner area of Pak Panang Bay increased by a total of 7 km2 (4,375 rai). However, it was found that between 1995 and 1999, 4 years before the operation of the watergate, coastal area increased by 1.89 km2 (1,181.25 rai) compared to 0.19 km2 (118.75 rai) of area expansion from 1999 to 2003, 4 years after the watergate was in operation. Sediment reduction due to the watergate operation may benefit the Pak Panang Bay by delaying the sediment filling of the bay. However, debate over the watergate as the main factor of sediment reduction calls for further investigation. |
| first_indexed | 2024-12-16T11:41:01Z |
| format | Article |
| id | doaj.art-1dc27fea2ae8411386ba6e47172c4a38 |
| institution | Directory Open Access Journal |
| issn | 1686-3933 2228-835X |
| language | English |
| last_indexed | 2024-12-16T11:41:01Z |
| publishDate | 2011-12-01 |
| publisher | Walailak University |
| record_format | Article |
| series | Walailak Journal of Science and Technology |
| spelling | doaj.art-1dc27fea2ae8411386ba6e47172c4a382022-12-21T22:32:56ZengWalailak UniversityWalailak Journal of Science and Technology1686-39332228-835X2011-12-012210.2004/wjst.v2i2.158151The Inner Area Change Detection in Pak Panang Bay Before and After the Operation of the Uthokawiphatprasit Watergate using Aerial Photographs and Geographic Information SystemPipop PRABNARONG0Suthira THONGKAO1School of Engineering and Resources Management, Walailak University, Thasala, Nakhon Si Thammarat 80161School of Engineering and Resources Management, Walailak University, Thasala, Nakhon Si Thammarat 80161This study investigates coastal changes in Pak Panang Bay, Nakhon Si Thammarat Province before and after the operation of the Uthokawiphatprasit Watergate over the Pak Panang River by using aerial photographs and geographic information system techniques. The aerial map on 1:15,000 scale produced by The Royal Thai Survey Department in 1974 was compared to the aerial photographs acquired in 1995, 1999 and 2003. The results revealed that from 1974 to 2003, the inner area of Pak Panang Bay increased by a total of 7 km2 (4,375 rai). However, it was found that between 1995 and 1999, 4 years before the operation of the watergate, coastal area increased by 1.89 km2 (1,181.25 rai) compared to 0.19 km2 (118.75 rai) of area expansion from 1999 to 2003, 4 years after the watergate was in operation. Sediment reduction due to the watergate operation may benefit the Pak Panang Bay by delaying the sediment filling of the bay. However, debate over the watergate as the main factor of sediment reduction calls for further investigation.http://wjst.wu.ac.th/index.php/wjst/article/view/158Geographic Information SystemAerial PhotographWatergatePak Panang Bay |
| spellingShingle | Pipop PRABNARONG Suthira THONGKAO The Inner Area Change Detection in Pak Panang Bay Before and After the Operation of the Uthokawiphatprasit Watergate using Aerial Photographs and Geographic Information System Walailak Journal of Science and Technology Geographic Information System Aerial Photograph Watergate Pak Panang Bay |
| title | The Inner Area Change Detection in Pak Panang Bay Before and After the Operation of the Uthokawiphatprasit Watergate using Aerial Photographs and Geographic Information System |
| title_full | The Inner Area Change Detection in Pak Panang Bay Before and After the Operation of the Uthokawiphatprasit Watergate using Aerial Photographs and Geographic Information System |
| title_fullStr | The Inner Area Change Detection in Pak Panang Bay Before and After the Operation of the Uthokawiphatprasit Watergate using Aerial Photographs and Geographic Information System |
| title_full_unstemmed | The Inner Area Change Detection in Pak Panang Bay Before and After the Operation of the Uthokawiphatprasit Watergate using Aerial Photographs and Geographic Information System |
| title_short | The Inner Area Change Detection in Pak Panang Bay Before and After the Operation of the Uthokawiphatprasit Watergate using Aerial Photographs and Geographic Information System |
| title_sort | inner area change detection in pak panang bay before and after the operation of the uthokawiphatprasit watergate using aerial photographs and geographic information system |
| topic | Geographic Information System Aerial Photograph Watergate Pak Panang Bay |
| url | http://wjst.wu.ac.th/index.php/wjst/article/view/158 |
| work_keys_str_mv | AT pipopprabnarong theinnerareachangedetectioninpakpanangbaybeforeandaftertheoperationoftheuthokawiphatprasitwatergateusingaerialphotographsandgeographicinformationsystem AT suthirathongkao theinnerareachangedetectioninpakpanangbaybeforeandaftertheoperationoftheuthokawiphatprasitwatergateusingaerialphotographsandgeographicinformationsystem AT pipopprabnarong innerareachangedetectioninpakpanangbaybeforeandaftertheoperationoftheuthokawiphatprasitwatergateusingaerialphotographsandgeographicinformationsystem AT suthirathongkao innerareachangedetectioninpakpanangbaybeforeandaftertheoperationoftheuthokawiphatprasitwatergateusingaerialphotographsandgeographicinformationsystem |