Juniper Publishers-Oceanography Open Access Journal

  Juniper Publishers -  Journal of Oceanography Abstract The U.S. Bureau of Ocean Energy Management (BOEM) has a congressional mandate and the U.S. Department of Energy (DOE) both have mandates to assess oceanic wind and oceanic wave energy and power resources and impacts; both structural and potentially ecological. Oceanic offshore winds and waves are viewed as being relatively steady sources of energy. However assessments of the amount of the wind resources and wave resources in U.S. coastal and oceanic environments have not been evaluated and have only been estimated by several rudimentary modeling efforts. As such, there are many National Oceanic & Atmospheric Administration (NOAA) National Data Buoy Center (NDBC) Marine Buoys which have collected considerable data on both wind and waves that can be harvested and evaluated for in-situ observations. Also the U.S. Department of the Interior, Bureau of Safety and Environmental Enforcement (BSEE) is charged with the develo...

  Juniper Publishers -  Journal of Oceanography Abstract Recent report of  Hydrocharis morsus-ranae  from Kasmir Himalaya-India should serve as an early warning to the whole South Asia that this invasive species might be already in the phase of breaking down of the historical biogeographic barrier (Himalayas) and may be introduced in the adjoining areas of South-East Asia in the near future. Therefore, it is high time to initiate early detection and rapid response, the most cost- effective strategy with maximum chances of success in the management of plant invasions. Keywords:  Early warning; South Asia; Invasion; Biogeographic barrier Go to Introduction The genus  Hydrocharis L.  is widely distributed in tropical and temperate regions of the old world (Cook and Luond, 1982), and comprises of 3 species namely:  H. dubia  (Blume) Backer,  H. morsus- ranae  L. and  H. chevalieri  (De Wildeman) Dandy. Biogeographically, these...

  Juniper Publishers -  Journal of Oceanography Introduction The Tagus River is the longest waterway in the Iberian Peninsula (1,007km) with source in Albarracin mountain- Spain and mouth in a wide estuary near Lisbon - Portugal. Throughout 32% of its waterway Tagus River influences the Portuguese territory with several irrigation dams and hydroelectric power plants. For decades, this river has received environmental pollutants from increased activities in industrial, domestic and agricultural systems, and also from a Spanish nuclear power plant that is 37 years old. This nuclear power plant is about to 100km far from the Portuguese border. For all those reasons it is very important to know the level of contamination of aquatic animals living in Tagus River. In many cases the toxicity caused by heavy metals is sublethal. Therefore, the animals can survive long enough to accumulate those metals and transfer them along the food chain. Historically, fish consumption per capita in...

  Juniper Publishers -  Journal of Oceanography Abstract The Heavy mineral analysis of the beach sediment is one of the finest ways to interpret the presence of the placer deposits in the coast. The point counting method is a widely used technique, which is employed for the quantitative analysis of heavy minerals. Nevertheless, this method is not applicable in case of large scale volumetric or spatial investigations as the surficial sediments occupy an inaccurate space due to its irregular grain size. Therefore, porosity is an important feature that has to be considered for the analyzing the quantitative distribution of the placer minerals present in the surface sediments. This paper highlights the effect of porosity in the heavy mineral distribution with respect to the grain size. The outcome from this research helps to enhance the results in quantitative analysis of heavy minerals. Keywords:  Heavy minerals, porosity, beach, sediments, grain size Go to Heavy mineral ana...