Nadin Ramirez

University of Concepción · Departamento de Geofísica

Northern Chilean Patagonia is a mega-estuarine system where oceanic waters mix with freshwater inputs in the coastal fjords, channels and gulfs. The aim of this study was to examine the distribution of blue and sei whales with respect to oceanographic conditions of the study area from the estuarine inner sea to the outer ocean. Ocean gliders were u...

We analyze historical hydrographic data together with recent high-resolution hydrographic and underwater glider observations collected in the Magellan Strait to determine the water mass characteristics and exchanges between the continental shelves of the southeast South Pacific and southwest South Atlantic around southern South America. The near-su...

El Estrecho de Magallanes (EM) es un canal interoceánico que conecta los océanos Pacífico y Atlántico Sur en el extremo sur de Sudamérica. Sus características batimétricas y morfológicas cumplen un importante rol en el flujo, la mezcla interoceánica y la distribución de las masas de agua. El objetivo de este trabajo es analizar las características...

We describe a seiche process based on current, temperature, and sea-level data obtained from the Reloncaví fjord (41.6∘ S, 72.5∘ W) in southern Chile. We combined 4 months of acoustic Doppler current profiler (ADCP) data with sea-level, temperature, and wind time series to analyze the dynamics of low-frequency (periods > 1 day) internal oscillation...

We describe a seiche process in a Chilean fjord, based on current, temperature and sealevel data obtained from the Reloncavi fjord (41.6° S, 72.5° W) in southern Chile. We combined four months of ADCP data with sealevel, temperature and wind time series to analyze the dynamics of low-frequency (periods > 1 day) internal oscillations in the fjord. A...

Gliders have become an efficient and reliable oceanographic platform for measuring physical and biogeochemical properties of the seawater, and the global glider fleet is rapidly expanding. In Chile, glider observations have been carried out in very different oceanographic environments, from the mild upwelling region of subtropical northern Chile to...

In contrast to the legendary upwelling that is present along the Peruvian and northern Chilean coasts, the coastal ocean off central Chile presents a highly seasonal upwelling regime that extends from early spring to mid fall. This region is also affected by a strong subsurface poleward flow that transport low-oxygen water from the eastern equatori...

The Reloncavi fjord have 55 km of length and 3 km of mean wide. There are four sub-basins, with mean depth of 450m , 250 m, 150m y 60 m. This fjord not present a shallow sill. There is directly connected with the Reloncavi sound. The original time series were analyzed in both time domain and frequency domain. The time series were filtered using a C...

The Reloncavi fjord (42.5°S, 72.3°W) is northernmost fjord of Chile. Inside of this fjord of 55 km of length and 1-3 km of width, several aquaculture activities mainly related with salmon farms occupied the fjord since the beginning of 80's. Studies has shown that in this deep fjord (of depths about 450 m near of its mouth) is characterized by a th...

PO14A-03 An intensive oceanographic study was conducted in the Reloncaví fjord, Chile (41o 23S, 72o 30W) during austral winter and spring of 2008, and summer of 2009. Inside the fjord, several CTD stations showed a clear develop of the estuarine circulation with a fresh water surface layer of ca. 8 m wide in the head which change of wide seasonally...