@article{fdi:010090091,
  title = {{B}ottom-water hypoxia in the {P}aracas {B}ay ({P}eru, 13.8 degrees {S}) associated with seasonal and synoptic time scale variability of winds and water stratification},
  author = {{M}erma-{M}ora, {L}. and {C}olas, {F}ran{\c{c}}ois and {C}ardich, {J}. and {F}lores, {E}. and {L}orenzo, {A}. and {A}guirre-{V}elarde, {A}. and {C}orrea, {D}. and {G}utierrez, {D}.},
  editor = {},
  language = {{ENG}},
  abstract = {{C}oastal hypoxia can occur naturally in inshore areas of the {E}astern {B}oundary {U}pwelling {S}ystems, influenced by the nutrient-rich and low-oxygen upwelling waters. {T}his study aims to explore the influence of water stratification and winds on bottom-water hypoxia of the {P}aracas {B}ay, an area subjected to the most intense alongshore winds and active coastal upwelling in the {P}eruvian coast. {M}onitoring data of the {P}isco-{P}aracas water properties (dissolved oxygen, temperature, salinity and estimated stratification), the {P}isco {R}iver flow, and the intensities of surface winds of the outside upwelling area, and of the local area, were analysed for the period 2006 to 2015. {B}ottom waters deeper than 8 m in the bay were shown undergoing a hypoxic regime (oxygen <1.4 m{L} {L}-1) that becomes more frequent towards austral summer and less frequent towards winter. {T}his seasonal difference was associated with changes in the oxygen content of incoming upwelling waters and changes in the intensity of both local and upwelling winds that drive the hydrodynamics of the bay. {H}igh frequency data analysis revealed that synoptic time-scale fluctuations of the upwelling-favourable and local winds modulate the intra-seasonal variability of hypoxia. {F}luctuations of the former drive the inshore expansion of mixed and less hypoxic upwelling waters during {J}une-{S}eptember, whereas fluctuations of the latter during {D}ecember-{A}pril drive the entrance and circulation of more hypoxic upwelling waters, and the development of stratification events that contribute to the persistence of bottom hypoxia.},
  keywords = {{C}oastal area ; {H}ypoxia ; {C}oastal upwelling ; {W}ater stratification ; {W}inds variability ; {E}nvironmental monitoring ; {PEROU} ; {PACIFIQUE}},
  booktitle = {},
  journal = {{J}ournal of {M}arine {S}ystems},
  volume = {241},
  numero = {},
  pages = {103918 [12 ]},
  ISSN = {0924-7963},
  year = {2024},
  DOI = {10.1016/j.jmarsys.2023.103918},
  URL = {https://www.documentation.ird.fr/hor/fdi:010090091},
}