Tidal and Residual Currents Observations at the San Matías and San José Gulfs, Northern Patagonia, Argentina
Four current time series, collected at costal locations of the San Matías and San José gulfs, Argentina, are analyzed for tidal and residual currents. Tides dominate San Matías Gulf dynamics, accounting for more than 72% of the variance, whereas winds dominate at San José Gulf, explaining approximat...
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| Veröffentlicht in: | Journal of coastal research 2009-07, Vol.25 (4), p.957-968 |
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| creator | Moreira, Diego Simionato, Claudia G. Dragani, Walter C. Nuandñez, Mario N. |
| description | Four current time series, collected at costal locations of the San Matías and San José gulfs, Argentina, are analyzed for tidal and residual currents. Tides dominate San Matías Gulf dynamics, accounting for more than 72% of the variance, whereas winds dominate at San José Gulf, explaining approximately 70% of the variance. Tides display a dominating semidiurnal regime, in compliance with what is know from the few tidal stations available and numerical simulations. At San Matías, coastal tidal currents speed increases northward, exceeding 0.6 m s−1 at San Antonio Este. Higher order harmonics because of nonlinear interactions are large; in every sampled site, M4 and M6 currents are stronger than the diurnal constituents and have amplitudes around 5% of those from M2. At Las Grutas (San Matías Gulf), simultaneous wind observations were collected. Currents respond almost instantaneously to wind variability in the form of two modes. The first one results from winds blowing along the northwest–southeast axis and is very weak; the second one results from winds blowing from any other direction and is characterized by strong meridional currents. Even though bimodal patterns are typical of semienclosed basins, the characteristic wind directions in this gulf are not related with the orientation of its mouth but could result of the circulation in the form of two gyres suggested by numerical simulations. Energy peaks are observed at the 4 to 8 days' band and at around 12 and 20 days. Therefore, currents rapidly respond to wind variability in every timescale, from synoptic to intraseasonal. |
| doi_str_mv | 10.2112/08-1035.1 |
| format | Article |
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Tides dominate San Matías Gulf dynamics, accounting for more than 72% of the variance, whereas winds dominate at San José Gulf, explaining approximately 70% of the variance. Tides display a dominating semidiurnal regime, in compliance with what is know from the few tidal stations available and numerical simulations. At San Matías, coastal tidal currents speed increases northward, exceeding 0.6 m s−1 at San Antonio Este. Higher order harmonics because of nonlinear interactions are large; in every sampled site, M4 and M6 currents are stronger than the diurnal constituents and have amplitudes around 5% of those from M2. At Las Grutas (San Matías Gulf), simultaneous wind observations were collected. Currents respond almost instantaneously to wind variability in the form of two modes. The first one results from winds blowing along the northwest–southeast axis and is very weak; the second one results from winds blowing from any other direction and is characterized by strong meridional currents. Even though bimodal patterns are typical of semienclosed basins, the characteristic wind directions in this gulf are not related with the orientation of its mouth but could result of the circulation in the form of two gyres suggested by numerical simulations. Energy peaks are observed at the 4 to 8 days' band and at around 12 and 20 days. Therefore, currents rapidly respond to wind variability in every timescale, from synoptic to intraseasonal.</description><identifier>ISSN: 0749-0208</identifier><identifier>EISSN: 1551-5036</identifier><identifier>DOI: 10.2112/08-1035.1</identifier><language>eng</language><publisher>Fort Lauderdale: Coastal Education and Research Foundation</publisher><subject>Blowing ; Blowing time ; Cave cenotes ; Coastal ; Coastal currents ; Coasts ; Computer simulation ; current measurements ; Diurnal variations ; Gulfs ; Gyres ; Marine ; Mathematical models ; Mouth ; Northpatagonian Gulfs ; Observational research ; Ocean currents ; Ocean tides ; Statistical variance ; Tidal currents ; Tides ; Time series ; Variance ; Wind ; Wind direction ; Wind forced currents</subject><ispartof>Journal of coastal research, 2009-07, Vol.25 (4), p.957-968</ispartof><rights>2009 Coastal Education and Research Foundation</rights><rights>Copyright 2009 The Coastal Education & Research Foundation [CERF]</rights><rights>Copyright Allen Press Publishing Services Jul 2009</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-b533t-1d62c0491f87070dddd5bbdc4fe884cc8b16d9a0b05ea4ad4d7309967190b9233</citedby><cites>FETCH-LOGICAL-b533t-1d62c0491f87070dddd5bbdc4fe884cc8b16d9a0b05ea4ad4d7309967190b9233</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://bioone.org/doi/pdf/10.2112/08-1035.1$$EPDF$$P50$$Gbioone$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/27698390$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,776,780,799,26955,27901,27902,52338,57992,58225</link.rule.ids></links><search><creatorcontrib>Moreira, Diego</creatorcontrib><creatorcontrib>Simionato, Claudia G.</creatorcontrib><creatorcontrib>Dragani, Walter C.</creatorcontrib><creatorcontrib>Nuandñez, Mario N.</creatorcontrib><title>Tidal and Residual Currents Observations at the San Matías and San José Gulfs, Northern Patagonia, Argentina</title><title>Journal of coastal research</title><description>Four current time series, collected at costal locations of the San Matías and San José gulfs, Argentina, are analyzed for tidal and residual currents. Tides dominate San Matías Gulf dynamics, accounting for more than 72% of the variance, whereas winds dominate at San José Gulf, explaining approximately 70% of the variance. Tides display a dominating semidiurnal regime, in compliance with what is know from the few tidal stations available and numerical simulations. At San Matías, coastal tidal currents speed increases northward, exceeding 0.6 m s−1 at San Antonio Este. Higher order harmonics because of nonlinear interactions are large; in every sampled site, M4 and M6 currents are stronger than the diurnal constituents and have amplitudes around 5% of those from M2. At Las Grutas (San Matías Gulf), simultaneous wind observations were collected. Currents respond almost instantaneously to wind variability in the form of two modes. The first one results from winds blowing along the northwest–southeast axis and is very weak; the second one results from winds blowing from any other direction and is characterized by strong meridional currents. Even though bimodal patterns are typical of semienclosed basins, the characteristic wind directions in this gulf are not related with the orientation of its mouth but could result of the circulation in the form of two gyres suggested by numerical simulations. Energy peaks are observed at the 4 to 8 days' band and at around 12 and 20 days. Therefore, currents rapidly respond to wind variability in every timescale, from synoptic to intraseasonal.</description><subject>Blowing</subject><subject>Blowing time</subject><subject>Cave cenotes</subject><subject>Coastal</subject><subject>Coastal currents</subject><subject>Coasts</subject><subject>Computer simulation</subject><subject>current measurements</subject><subject>Diurnal variations</subject><subject>Gulfs</subject><subject>Gyres</subject><subject>Marine</subject><subject>Mathematical models</subject><subject>Mouth</subject><subject>Northpatagonian Gulfs</subject><subject>Observational research</subject><subject>Ocean currents</subject><subject>Ocean tides</subject><subject>Statistical variance</subject><subject>Tidal currents</subject><subject>Tides</subject><subject>Time series</subject><subject>Variance</subject><subject>Wind</subject><subject>Wind direction</subject><subject>Wind forced currents</subject><issn>0749-0208</issn><issn>1551-5036</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNqN0s1qFTEUB_BBFLxWFz6AEFxohU49J5l8LctFq1KtaF0PmUmmzmWa1CQj9JFc-BR9MTNeUXBx22xC4Jf_OZykqh4jHFJE-hJUjcD4Id6pVsg51hyYuFutQDa6BgrqfvUgpQ0ACtXIVeXPRmsmYrwln1wa7VwO6zlG53Mip11y8bvJY_CJmEzyV0c-G0_em3z906Tft5bzu5Cuf5DjeRrSAfkQYnHRk48mm_PgR3NAjuJ5CRy9eVjdG8yU3KM_-1715fWrs_Wb-uT0-O366KTuOGO5RitoD43GQUmQYMviXWf7ZnBKNX2vOhRWG-iAO9MY21jJQGshUUOnKWN71fNt7mUM32aXcnsxpt5Nk_EuzKlVnDVKUNA3S6aFQilEkc92Siao4BrwRkiRAmhkt4CoKMMlcX8nRCklUl46vR1FgZwW-vQ_uglz9OVdSmVQugxpKf1ii_oYUopuaC_jeGHiVYuwNEhbUO3y5drFPtnaTcoh_oVUCl3GCP9m3Y0heLcj6RcxX9v9</recordid><startdate>200907</startdate><enddate>200907</enddate><creator>Moreira, Diego</creator><creator>Simionato, Claudia G.</creator><creator>Dragani, Walter C.</creator><creator>Nuandñez, Mario N.</creator><general>Coastal Education and Research 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N.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Tidal and Residual Currents Observations at the San Matías and San José Gulfs, Northern Patagonia, Argentina</atitle><jtitle>Journal of coastal research</jtitle><date>2009-07</date><risdate>2009</risdate><volume>25</volume><issue>4</issue><spage>957</spage><epage>968</epage><pages>957-968</pages><issn>0749-0208</issn><eissn>1551-5036</eissn><abstract>Four current time series, collected at costal locations of the San Matías and San José gulfs, Argentina, are analyzed for tidal and residual currents. Tides dominate San Matías Gulf dynamics, accounting for more than 72% of the variance, whereas winds dominate at San José Gulf, explaining approximately 70% of the variance. Tides display a dominating semidiurnal regime, in compliance with what is know from the few tidal stations available and numerical simulations. At San Matías, coastal tidal currents speed increases northward, exceeding 0.6 m s−1 at San Antonio Este. Higher order harmonics because of nonlinear interactions are large; in every sampled site, M4 and M6 currents are stronger than the diurnal constituents and have amplitudes around 5% of those from M2. At Las Grutas (San Matías Gulf), simultaneous wind observations were collected. Currents respond almost instantaneously to wind variability in the form of two modes. The first one results from winds blowing along the northwest–southeast axis and is very weak; the second one results from winds blowing from any other direction and is characterized by strong meridional currents. Even though bimodal patterns are typical of semienclosed basins, the characteristic wind directions in this gulf are not related with the orientation of its mouth but could result of the circulation in the form of two gyres suggested by numerical simulations. Energy peaks are observed at the 4 to 8 days' band and at around 12 and 20 days. Therefore, currents rapidly respond to wind variability in every timescale, from synoptic to intraseasonal.</abstract><cop>Fort Lauderdale</cop><pub>Coastal Education and Research Foundation</pub><doi>10.2112/08-1035.1</doi><tpages>12</tpages></addata></record> |
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| subjects | Blowing Blowing time Cave cenotes Coastal Coastal currents Coasts Computer simulation current measurements Diurnal variations Gulfs Gyres Marine Mathematical models Mouth Northpatagonian Gulfs Observational research Ocean currents Ocean tides Statistical variance Tidal currents Tides Time series Variance Wind Wind direction Wind forced currents |
| title | Tidal and Residual Currents Observations at the San Matías and San José Gulfs, Northern Patagonia, Argentina |
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