Empirical relations to estimate underwater PAR attenuation in San Quintín Bay using Secchi depth and horizontal sighting range
Empirical relationships to estimate vertical attenuation coefficient of photosynthetically available radiation (KPAR) usingSecchi disk, vertical black disk, and horizontal sighting ranges for San Quintín Bay, Baja California, were developed.Radiometric PAR profiles were used to calculate KPAR. Verti...
| Autores: | , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2005 |
| País: | México |
| Recursos: | Centro de Investigación Científica y de Educación Superior de Ensenada |
| Repositorio: | Redalyc-CICESE |
| OAI Identifier: | oai:redalyc.org:48031408 |
| Acesso em linha: | https://www.redalyc.org/articulo.oa?id=48031408 |
| Access Level: | acceso abierto |
| Palavra-chave: | Ciencias de la Tierra Secchi disk PAR attenuation Baja California coastal lagoons horizontal sighting range |
| Resumo: | Empirical relationships to estimate vertical attenuation coefficient of photosynthetically available radiation (KPAR) usingSecchi disk, vertical black disk, and horizontal sighting ranges for San Quintín Bay, Baja California, were developed.Radiometric PAR profiles were used to calculate KPAR. Vertical (ZD) and horizontal (HS) sighting ranges were measuredwith white (Secchi depth or ZSD, HSW) and black (ZBD, HSB) targets. The empirical power models KPAR = 1.48 ZSD1.16, KPAR =0.87 ZBD1.52, KPAR = 0.54 HSW0.65 and KPAR = 0.53 HSB0.92 were developed for the corresponding relationships. The parametersof these models are not significantly different from those of models developed for Punta Banda Estuary, another Baja Californialagoon, with the exception of the one for the KPAR-HSW relationship. Also, parameters of the KPAR-ZSD model for San Quintín Bayand Punta Banda Estuary are not significantly different from those developed for coastal waters near Santa Barbara, California. Aset of general models is proposed that may apply to coastal water bodies of northwestern Baja California and southern California(KPAR = 1.45 ZSD1.10, KPAR = 0.92 ZBD1.45, and KPAR = 0.70 HSB1.10). While this approach may be universal, more data are neededto explore the variability of the parameters between different water bodies. |
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