@article{fdi:010071919, title = {{A}pplication of the support vector regression method for turbidity assessment with {MODIS} on a shallow coral reef lagoon ({V}oh-{K}one-{P}ouembout, {N}ew {C}aledonia)}, author = {{W}attelez, {G}. and {D}upouy, {C}{\'e}cile and {L}efevre, {J}{\'e}r{\^o}me and {O}uillon, {S}ylvain and {F}ernandez, {J}. {M}. and {J}uillot, {F}arid}, editor = {}, language = {{ENG}}, abstract = {{P}article transport by erosion from ultramafic lands in pristine tropical lagoons is a crucial problem, especially for the benthic and pelagic biodiversity associated with coral reefs. {S}atellite imagery is useful for assessing particle transport from land to sea. {H}owever, in the oligotrophic and shallow waters of tropical lagoons, the bottom reflection of downwelling light usually hampers the use of classical optical algorithms. {I}n order to address this issue, a {S}upport {V}ector {R}egression ({SVR}) model was developed and tested. {T}he proposed application concerns the lagoon of {N}ew {C}aledoniathe second longest continuous coral reef in the worldwhich is frequently exposed to river plumes from ultramafic watersheds. {T}he {SVR} model is based on a large training sample of in-situ turbidity values representative of the annual variability in the {V}oh-{K}one-{P}ouembout lagoon ({W}estern {C}oast of {N}ew {C}aledonia) during the 2014-2015 period and on coincident satellite reflectance values from {MOD}erate {R}esolution {I}maging {S}pectroradiometer ({MODIS}). {I}t was trained with reflectance and two other explanatory parametersbathymetry and bottom colour. {T}his approach significantly improved the model's capacity for retrieving the in-situ turbidity range from {MODIS} images, as compared with algorithms dedicated to deep oligotrophic or turbid waters, which were shown to be inadequate. {T}his {SVR} model is applicable to the whole shallow lagoon waters from the {W}estern {C}oast of {N}ew {C}aledonia and it is now ready to be tested over other oligotrophic shallow lagoon waters worldwide.}, keywords = {turbidity ; remote-sensing ; {MOD}erate {R}esolution {I}maging {S}pectroradiometer ({MODIS}) ; {S}upport {V}ector {R}egression ({SVR}) ; oligotrophic lagoon ; bathymetry ; reflectance ; seabed colour ; coral reef ; {N}ew {C}aledonia ; {NOUVELLE} {CALEDONIE} ; {PACIFIQUE} ; {VOH} {KONE} {POUEMBOUT} {LAGON}}, booktitle = {}, journal = {{W}ater}, volume = {9}, numero = {10}, pages = {art. 737 [ ]}, ISSN = {2073-4441}, year = {2017}, DOI = {10.3390/w9100737}, URL = {https://www.documentation.ird.fr/hor/fdi:010071919}, }