in this study variations of field data such as temperature, salinity and density in and across the transects of chahbahar bay were analyzed using ctd data acquired between winter 2006 and spring 2007 (winter monsoon).the results showed that thermocline layer intensify in mouth of bay between 2m and 6m with 7.81 ?c decrease before the gonou hurricane occured (mid-may 2007). below thermocline lay...

Abstract At low latitudes in the ocean, deep currents are shaped into narrow jets flowing eastward and westward, reversing periodically with latitude between 15°S 15°N. These present from thermocline to bottom. The energy sources physical mechanisms responsible for their formation still debated poorly understood. This study explores role of destabilization intra-annual equatorial waves jets’ pr...

A set of maps are presented of nutrient distribution on isopycnal surfaces in the North and tropical Atlantic Ocean main thermocline. The data used in producing these maps are from the Transient Tracers in the Oceans (TTO) North Atlantic Study and Tropical Atlantic Study, an associated German study (Meteor 56/5), two cross-Atlantic sections from cruise 109 of the Atlantis II, and the GEOSECS pr...

mean tropical state driving El Niño events for this analysis. Table 1 shows that knowledge of these quantities averaged over a 50-year window is not sufficient to determine the ENSO variability over the same window–developing more sophisticated metrics is a crucial goal of the proposed research. Nonetheless, simple lag-correlation analysis of NINO3 index and eastern Pacific thermocline depth (l...

With the rapid development of sensor networks, big marine data arises. To efficiently use these data to predict thermoclines, we propose a machine learning approach. We firstly focus on analyzing how temperature, salinity, and geographic location features affect the formation of thermocline. Then, an improved model based on entropy value method for the thermocline selection is demonstrated. The...

While the pivotal role of Indonesian Throughflow (ITF) in global ocean circulation and climate has been widely recognized, accurate estimation its volume transport based on observational data remains challenging. This work provides an updated estimate monthly ITF geostrophic (ITFG) upper 700 m at IX1 section between Indonesia Australia. The ITFG is better constrained by improved correction new ...

Formation of North Atlantic Deep Water (NADW) represents a transfer of upper layer water to abyssal depths at a rate of 15 to 20 x 10 6 m3/s. NADW spreads throughout the Atlantic Ocean and is exported to the Indian and Pacific Oceans by the Antarctic Circumpolar Current and deep western boundary currents. Naturally, there must be a compensating flow of upper layer water toward the northern Nort...

[1] An ocean model is used to test the idea that sea surface DC behaves as a thermocline proxy in the eastern equatorial Pacific. The ORCA2 model, which includes DC as a passive tracer, has been forced with reanalysis fluxes over 1948–1999, and the output is compared with a previously reported Galapagos DC record. The model reproduces the abrupt increase in the seasonally minimum DC in 1976/77 ...

[1] Enhanced phytoplankton biomass in the wake of the Galápagos Islands is thought to result from an island-mass effect (IME) fueled by upwelling of the Equatorial Undercurrent (EUC) and by natural iron enrichment from the island platform. Annual means of five variables describing the thermocline, the pycnocline, and the availability of nitrate at the surface were derived from the World Ocean A...