Hydrodynamic response of Papaloapan estuary to potential future sea-level rise
Abstract
Understanding the hydrodynamics in estuaries with respect to magnitudes of sea-level rise is important to comprehend the changes of distinct physical processes which are coupled among each other. The current state of the lagoons and rivers of the Papaloapan estuary, Ver., is studied in order to identify these processes and have a base line with which compare different sea-level rise and hydrological regimes scenarios, with particular attention in the average salt content, its change in different zones, and the intrusion length into the rivers. For this purpose, hydrography, water level, salinity, bathymetry, and current measurements were carried out, complementary to this, a coastal ocean model is implemented to study the response of the region to a sea level increase. Six oceanographic expeditions in which 49 stations of CTD were carried out and 11 thermistors were placed, it was found that the major tidal components are O1 and K1, with an amplitude of 13.5 and 12.3 cm respectively in the channel, followed by the Q1, N2 and S2 components according to the amplitude. Salt content upstream the rivers show more increase in the dry period than in the wet period of the year. In addition, hydrographic data show that in most of the surveys, Camaronera lagoon had larger salinity than Buen Pais, Alvarado and Tlalixcoyan lagoons.
- Publication:
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AGU Spring Meeting Abstracts
- Pub Date:
- May 2013
- Bibcode:
- 2013AGUSMOS31B..13O
- Keywords:
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- 4546 OCEANOGRAPHY: PHYSICAL / Nearshore processes