کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4531621 1626099 2016 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tidal dynamics in a frictionally dominated tropical lagoon
ترجمه فارسی عنوان
دینامیک جزر و مد در یک لنگه گرمسیری تحت فشار اصطکاکی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
چکیده انگلیسی


• Tidal propagation inside a semi-closed branched system was examined.
• The Chelem lagoon was determined to be a highly frictional basin.
• The momentum balance in Chelem was between pressure gradient and frictional forces.
• The tidal signal was most attenuated toward the west head due to a causeway.
• A fortnightly-period fluctuation related to the tropical spring tide was observed.

This study examined the dynamics of tidal propagation inside a tropical lagoon. Sea surface elevation (inside) and current profiles (at the inlet) were examined over 60 days at the Chelem lagoon, which is a branched tropical lagoon located in the northern Yucatan Peninsula. Tides were predominantly diurnal with a wavelength at least 20 times longer than the total length of the basin. Spatial variations of sea surface elevation and the longitudinal transport were described in each branch by applying a linear analytical model and the results were compared to observations. Results showed that the coastal lagoon was highly frictional. The tidal signal was attenuated between 30% and 40% toward the lagoon heads, a result of the balance between pressure gradient and frictional forces. A causeway that chokes the western side of the lagoon allowed the propagation of the diurnal signal toward the west head of the basin but damped the semidiurnal signal. The causeway acted as a hydraulic low-pass filter, as in natural choked systems. The causeway's filter effect was included in the analytical model by optimizing the frictional parameters.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Continental Shelf Research - Volume 114, 15 February 2016, Pages 16–28
نویسندگان
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