RT journal article
T1 High-Chlorophyll-Area Assessment Based on Remote Sensing Observations: The Case Study of Cape Trafalgar
A1 Sala Martínez, Iria
A1 Navarro, Gabriel
A1 Bolado Penagos, Marina
A1 Echevarría Navas, Fidel María
A1 García Jiménez, Carlos Manuel
A2 Biología
A2 Física Aplicada
AB Cape Trafalgar has been highlighted as a hotspot of high chlorophyll concentrations,as well as a source of biomass for the Alborán Sea. It is located in an unique geographical frameworkbetween the Gulf of Cádiz (GoC), which is dominated by long-term seasonal variability, and the Straitof Gibraltar, which is mainly governed by short-term tidal variability. Furthermore, here bathymetryplays an important role in the upwelling of nutrient-rich waters. In order to study the spatialand temporal variability of chlorophyll-a in this region, 10 years of ocean colour observationsusing the MEdium Resolution Imaging Spectrometer (MERIS) were analysed through differentapproaches. An empirical orthogonal function decomposition distinguished two coastal zones withopposing phases that were analysed by wavelet methods in order to identify their temporal variability.In addition, to better understand the physical–biological interaction in these zones, the co-variationbetween chlorophyll-a and different environmental variables (wind, river discharge, and tidal current)was analysed. Zone 1, located on the GoC continental shelf, was characterised by a seasonal variabilityweakened by the influence of other environmental variables. Meanwhile, Zone 2, which representedthe dynamics in Cape Trafalgar but did not show any clear pattern of variability, was stronglycorrelated with tidal current whose variability was probably determined by other drivers.
PB MDPI
SN 2072-4292
YR 2018
FD 2018-01-25
LK http://hdl.handle.net/10498/38055
UL http://hdl.handle.net/10498/38055
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-nov-2026