An assessment of a coastal altimetry data product in the Indonesian Waters

2nd International Conference on Marine Science: Better Insight for the Healthy Ocean

Lumban-Gaol, Jonson^1 ; Adrian, Danu^1 ; Vignudelli, Stefano^2 ; Leben, Robert. R.^3 ; Wayan Nurjaya, I.^1 ; Osawa, Takahiro^4 ; Manurung, Parluhutan^5 ; Arhatin, Risti Endriani^1

Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, Bogor Agricultural University, Indonesia^1

Consiglio Nazionaledelle Ricerche, Istituto di Biofisica, Area Ricerca CNR, San Cataldo, Pisa

56127, Italy^2

Colorado Center for Astrodynamics Research, Colorado University, Boulder

CO

80309-0431, United States^3

Center for Remote Sensing and Ocean Sciences, Jalan Jenderal Sudirman, Udayana University, Bali, Indonesia^4

Indonesian Geospatial Information Agency (BIG), JalanRaya Jakarta-Bogor Km 46, Cibinong

16911, Indonesia^5

关键词: Coastal waters;    Data products;    Geophysical data;    Indonesians;    Ocean datum;    Seasonal variation;    Southeast monsoon;    Wave forms;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/176/1/012034/pdf
DOI  :  10.1088/1755-1315/176/1/012034

来源: IOP

【 摘 要 】

We analyzed the percentage of valid coastal altimetry Jason-2 X-TRACK-SLA data by Center for Topographic Studies in Sea and Hydrosphere (CTOH) and the waveforms from the Sensor Geophysical Data Record (SDGR) that are distributed by NOAA National Ocean Data Center around the Indonesian waters. In general, the percentage of valid data after the first point of the shoreline is greater than 90%. The percentage of valid data in steeper waters (86%) is higher than sloping waters (34%). The waveform types formed in coastal waters are peaky and Brown. However, spatially there is a difference where in a steep coast at a distance of > 5 km from the coastline the type of waveform is identified Brown, while on the sloping coast the brown type is found at a distance > 10 km. The SLA time series indicate seasonal variations in which the SLA is negative during the Southeast Monsoon (May-October) and positive during Northwest Monsoon (November-April).