Analysis of natural background and dredging-induced changes in TSM concentration from MERIS images near commercial harbours in the Estonian coastal sea
| Autor: | Laura Raag, Liis Sipelgas, Rivo Uiboupin |
|---|---|
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | International Journal of Remote Sensing. 35:6764-6780 |
| ISSN: | 1366-5901 0143-1161 |
| Popis: | Medium Resolution Imaging Spectrometer (MERIS) products with 300 m resolution from 2006 to 2011 were used to evaluate the local background of total suspended matter (TSM) in the vicinity of commercial harbours located along the Estonian coastline in the Baltic Sea. The difference between background TSM maps (mainly influenced by spring bloom, cyanobacterial bloom, resuspension, and river inflow) and dredging period mean maps was used for the estimation of dredging-induced turbidity at the time of dredging operations. Validation of Case II Regional (C2 R) and Free University of Berlin (FUB) MERIS processors with point measurements showed that both processors represent the changes in TSM concentration adequately. C2 R processors showed better statistics (R2 = 0.61, root mean square error = 0.82 mg l–1, SD = 0.77 mg l–1, mean bias = –0.28 mg l–1) compared to the FUB processor. Analysis of monthly mean TSM maps revealed that the variability of TSM concentration, showing the resilience level of the local ecosy... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|