Variations in coastal temperatures on the southern and central California coast

List, E. J.; Koh, Robert C. Y.

doi:10.1029/jc081i012p01971

Cited by 30 publications

(15 citation statements)

References 14 publications

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“…Hueneme-nearly 200 km apart) and suggested that coherence is also found in the near-coastal region. List and Koh (1976) described the low frequency (period >4 months) components of nearshore surface temperatures as highly correlated throughout the entire Southern California coast. This bightwide coherence, at least at annual to interannual frequencies, can bc considered as caused by large-scale natural phcnomcna, such as seasonal change, El Niiio events, or other changes in the bight circulation pattern.…”

Section: Physical Oceanography Of the Bightmentioning

confidence: 99%

Natural versus human-caused variability of water clarity in the Southern California Bight

Conversi

McGowan

1994

Limnol. Oceanogr.

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This paper examines the spatial and temporal variability of two optical properties (percent transmissivity and Secchi disk depth) measured near three areas in the Southern California Bight in which strong human influence, in the form of sewage discharge, is present. Fifteen years of data collected monthly at test and control stations were examined by time-series and other statistical analyses. By comparing the variability of these properties between the three areas (50-200 km apart) and within areas with the local discharges, we have attempted to distinguish anthropogenically induced variability (variations associated with the local discharges) from natural variability (bightwide fluctuations). Although our results do not provide a totally unambiguous picture, they do indicate that most of the variability of these water-column properties is driven by bightwide natural phenomena.

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Section: Physical Oceanography Of the Bightmentioning

confidence: 99%

Natural versus human-caused variability of water clarity in the Southern California Bight

Conversi

McGowan

1994

Limnol. Oceanogr.

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“…On the other hand, wind forcing explains diurnal and lower frequency temperature variability (Cairns and LaFond, 1966;List and Koh, 1976;Dorman and Palmer, 1981). Ekman upwelling is weak in the Bight nearshore (Winant and Bratkovich, 1981;Jackson, 1986), but energetic in northern Baja California (Barton and Argote, 1980).…”

Section: Introductionmentioning

confidence: 99%

Temperature, stratification and barnacle larval settlement in two Californian sites

Pineda

López

2002

Continental Shelf Research

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Barnacle settlement was monitored in two sites 100 km apart along the coast of Alta and Baja California. In five periods of observations completed between 1991 and 1996, Chthamalus spp., Pollicipes polymerus, and Balanus glandula settlement was consistently higher in the northern site, La Jolla (LJ), than in the southern site, La Salina (LS). For Chthamalus, the most abundant settler, settlement was higher in LJ in 58 out of 60 paired dates, by a mean factor of 141. In 1996, time series of temperature in about 15 m of water showed that the stratification was 72% higher, on average, and that the thermocline was shallower in LJ than in LS. Spectra of temperature showed that internal motions of tidal and higher frequencies were more energetic and closer to the surface in LJ compared to LS. In LJ changes in settlement were positively correlated with changes in stratification. These results suggest that high-frequency internal motions are important in the onshore transport of larvae. Low-frequency cooling events recorded in LJ apparently caused the energetic semidiurnal temperature variability to migrate from the bottom towards the surface, leading to the surface manifestation of the internal tide and surface internal tidal bores, which indicates that the surface nearshore bores occur in response to the shallowing of the thermocline. Tidal and higher frequency internal motions were more energetic when the thermocline was shallow during the low-frequency cooling events, than when it was deep and relatively weak during ordinary conditions. The major cooling event in LJ correlated with the local wind, suggesting local wind-driven upwelling. On the other hand, correlation of LS temperature with LJ temperature, winds, and sea level suggest propagation from the South. These results suggest that the low-frequency drops in temperature that modulate the nearshore internal tidal bores are caused by a combination of the local wind and events that propagate poleward, possibly as coastally trapped waves. r

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“…SST spectra along the California coast over several years exhibited strong peaks at 14.7 days; these peaks were probably the result of tidal aliasing and/or the spring and neap tides (List and Koh, 1976 (Skogsberg, 1936 (Huyer et al 1979).…”

mentioning

confidence: 99%

“…138) surface temperature fields (Barnett and Patzert, 1980; Halliwell Reid et al (1958) and List and Koh (1976 1972-73, 1976-77, 1979-80, and 1982-83 (1) core varied between 25 and 50km offshore, (2) vertical extent varied between about 50 and 125m, and (3) width was of the order of 20km. (Breaker, 1982 …”

mentioning

confidence: 99%

The space-time scales of variability in oceanic thermal structure off the Central California coast /

Breaker¹

1983

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Variations in coastal temperatures on the southern and central California coast

Abstract: Th.e resu.its of a time series analysis of several years of coastal ocean temperature records are presented for d1scuss1on. The records have been analyzed by using digital filtering, covariance and spectral analysis.

Cited by 30 publications

References 14 publications

Natural versus human-caused variability of water clarity in the Southern California Bight

Natural versus human-caused variability of water clarity in the Southern California Bight

Temperature, stratification and barnacle larval settlement in two Californian sites

The space-time scales of variability in oceanic thermal structure off the Central California coast /

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