Tidal influence on high frequency harbor oscillations in a narrow entrance bay
High frequency sea level oscillations at Wells Harbor (Maine, Northeastern US), with periods in the range of several tens of minutes, display a tidally modulated response. During low tides, these sea level oscillations reach amplitudes of 10–20 cm, while during high tides they are significantly smal...
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Veröffentlicht in: | Natural hazards (Dordrecht) 2014-10, Vol.74 (1), p.143-153 |
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description | High frequency sea level oscillations at Wells Harbor (Maine, Northeastern US), with periods in the range of several tens of minutes, display a tidally modulated response. During low tides, these sea level oscillations reach amplitudes of 10–20 cm, while during high tides they are significantly smaller. Wells Harbor is located in a low lying area with a tidal range of about 2 m and is connected to the open ocean through a narrow channel. Thus, the extent and depth of the bay significantly vary over a tidal cycle. This changing geometry determines both the resonant periods and the amplification factor of the bay. Numerical results confirm the link between observed variability and these specific topographic features. Results imply that when exceptionally energetic long waves reach the Wells Harbor entrance (as in the case of a tsunami or meteotsunami) the expected response will be significantly stronger during low tide than during high tide. Although mean sea level would be lower in the former case, the currents inside the bay would be stronger and potentially more dangerous. This tidally modulated response could be extrapolated to other sites with similar topographic characteristics. |
doi_str_mv | 10.1007/s11069-014-1284-3 |
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During low tides, these sea level oscillations reach amplitudes of 10–20 cm, while during high tides they are significantly smaller. Wells Harbor is located in a low lying area with a tidal range of about 2 m and is connected to the open ocean through a narrow channel. Thus, the extent and depth of the bay significantly vary over a tidal cycle. This changing geometry determines both the resonant periods and the amplification factor of the bay. Numerical results confirm the link between observed variability and these specific topographic features. Results imply that when exceptionally energetic long waves reach the Wells Harbor entrance (as in the case of a tsunami or meteotsunami) the expected response will be significantly stronger during low tide than during high tide. Although mean sea level would be lower in the former case, the currents inside the bay would be stronger and potentially more dangerous. 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During low tides, these sea level oscillations reach amplitudes of 10–20 cm, while during high tides they are significantly smaller. Wells Harbor is located in a low lying area with a tidal range of about 2 m and is connected to the open ocean through a narrow channel. Thus, the extent and depth of the bay significantly vary over a tidal cycle. This changing geometry determines both the resonant periods and the amplification factor of the bay. Numerical results confirm the link between observed variability and these specific topographic features. Results imply that when exceptionally energetic long waves reach the Wells Harbor entrance (as in the case of a tsunami or meteotsunami) the expected response will be significantly stronger during low tide than during high tide. Although mean sea level would be lower in the former case, the currents inside the bay would be stronger and potentially more dangerous. This tidally modulated response could be extrapolated to other sites with similar topographic characteristics.</description><subject>Civil Engineering</subject><subject>Coastal zone</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Entrances</subject><subject>Environmental Management</subject><subject>Geophysics/Geodesy</subject><subject>Geotechnical Engineering & Applied Earth Sciences</subject><subject>Harbors</subject><subject>High tides</subject><subject>Hydrogeology</subject><subject>Mathematical models</subject><subject>Meteorology</subject><subject>Natural Hazards</subject><subject>Oceanography</subject><subject>Original Paper</subject><subject>Oscillations</subject><subject>Sea level</subject><subject>Tidal range</subject><subject>Tides</subject><subject>Tsunamis</subject><subject>Wells</subject><issn>0921-030X</issn><issn>1573-0840</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp1kEtLAzEUhYMoWKs_wF3AjZtobpJ5ZCnFF4gu7MJdSCaZdso0qckU6b83w7gQwdWFy_cdDgehS6A3QGl1mwBoKQkFQYDVgvAjNIOi4oTWgh6jGZUMCOX04xSdpbShFKBkcoZel53VPe582--dbxwOHq-71Rq30X2OnwNe62hCxCE1Xd_roQs-ZR5r7HWM4Qs7P0Q9qkYfztFJq_vkLn7uHL0_3C8XT-Tl7fF5cfdCtBBsILa2EiSTrSkqoIYZRoWzTthaMHAWuHSNddYKw0Vtywq0MJpJa0xTGs3n6HpK3cWQS6ZBbbvUuNzOu7BPCkqoQUjgkNGrP-gm7KPP3RQUJa8KWfEqUzBRTQwpRdeqXey2Oh4UUDXuq6Z9Vd5Xjfsqnh02OSmzfuXir-R_pW9CIH3Z</recordid><startdate>20141001</startdate><enddate>20141001</enddate><creator>Monserrat, S.</creator><creator>Fine, I.</creator><creator>Amores, A.</creator><creator>Marcos, M.</creator><general>Springer Netherlands</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7ST</scope><scope>7TG</scope><scope>7UA</scope><scope>7XB</scope><scope>88I</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>FR3</scope><scope>GNUQQ</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>L6V</scope><scope>M2P</scope><scope>M7S</scope><scope>PATMY</scope><scope>PCBAR</scope><scope>PHGZM</scope><scope>PHGZT</scope><scope>PKEHL</scope><scope>PQEST</scope><scope>PQGLB</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>Q9U</scope><scope>SOI</scope></search><sort><creationdate>20141001</creationdate><title>Tidal influence on high frequency harbor oscillations in a narrow entrance bay</title><author>Monserrat, S. ; 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During low tides, these sea level oscillations reach amplitudes of 10–20 cm, while during high tides they are significantly smaller. Wells Harbor is located in a low lying area with a tidal range of about 2 m and is connected to the open ocean through a narrow channel. Thus, the extent and depth of the bay significantly vary over a tidal cycle. This changing geometry determines both the resonant periods and the amplification factor of the bay. Numerical results confirm the link between observed variability and these specific topographic features. Results imply that when exceptionally energetic long waves reach the Wells Harbor entrance (as in the case of a tsunami or meteotsunami) the expected response will be significantly stronger during low tide than during high tide. Although mean sea level would be lower in the former case, the currents inside the bay would be stronger and potentially more dangerous. This tidally modulated response could be extrapolated to other sites with similar topographic characteristics.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s11069-014-1284-3</doi><tpages>11</tpages></addata></record> |
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subjects | Civil Engineering Coastal zone Earth and Environmental Science Earth Sciences Entrances Environmental Management Geophysics/Geodesy Geotechnical Engineering & Applied Earth Sciences Harbors High tides Hydrogeology Mathematical models Meteorology Natural Hazards Oceanography Original Paper Oscillations Sea level Tidal range Tides Tsunamis Wells |
title | Tidal influence on high frequency harbor oscillations in a narrow entrance bay |
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