Name
Title | ||
|---|---|---|
Optical remote sensing for long-term changes of surface sediments on tidal flats: Preliminary results in the West Coast of Korea |
Abstract | ||
|---|---|---|
The main objective of this study is long-term monitoring of surface sediment on tidal flats using optical remote sensing. Tidal flat reflectance is sensitive to conditions that constantly change and cause variation of interstitial water contents along with exposure time, remnant water, etc. It is difficult to retrieve sediment grain size from optical reflectance alone without correcting the tidal condition effects. In this study, the tidal flat surface reflectance model according to grain size is proposed by two-step PCA transformation to remove tidal effects. The proposed method showed a potential to classify sediment by grain size regardless of exposure time and tidal conditions. We applied the method to nine scenes of LANDSAT TM images acquired between 1988 and 2009. The preliminary results well demonstrated that the proposed approach is effective to monitor changes of grain size distribution at a large scale independent of tidal conditions. However, this method has a limitation particularly over the vegetated areas and sand shoals mainly because of strong reflection in the NIR channels compared with other areas. For the validation, this study requires further field survey to obtain more in-situ data. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1109/IGARSS.2014.6947449 | IGARSS |
Keywords | Field | DocType |
sediments,remote sensing,optical remote sensing,grain size sediment,tidal condition effects,tidal conditions,sand shoals,tidal flat,tidal flat surface reflectance model,tides,grain size,remnant water,sediment grain size,long-term surface sediment changes,vegetated areas,two-step pca transformation,landsat tm images,ad 1988 to 2009,in-situ data,korea west coast,oceanographic techniques,nir channels,surface sediment,grain size distribution changes,optical reflectance,interstitial water contents,tidal effects,exposure time,satellites,earth,reflectivity | Sediment,Remote sensing,Geology | Conference |
ISSN | Citations | PageRank |
2153-6996 | 0 | 0.34 |
References | Authors | |
0 | 4 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Wook Park | 1 | 0 | 0.68 |
| Yoon-Kyung Lee | 2 | 256 | 28.91 |
| Dong-Jae Kwon | 3 | 0 | 0.34 |
| Joong-Sun Won | 4 | 80 | 16.84 |