This paper analyses long-term and seasonal changes in the North Sea plankton community during the period 1970 to 2008. Based on Continuous Plankton Recorder (CPR) data covering 38 yr, major changes in both phytoplankton and zooplankton abundance and community structure were identified. Regime changes were detected around 1978, 1989 and 1998. The first 2 changes have been discussed in the litera...

This study captures regime-switching, monetary policy responses to financial market disturbances in Canada. Monetary policy is identified within a nonlinear, structural VAR framework with a regime-switching policy block that allows for contemporaneous policy reactions in a small open economy. The key finding is that monetary policy in Canada has undergone important changes in monetary policy re...

gonu storm was formed in tropical basin of indian ocean early in june 2007. gonu is the strongest tropical cyclone that happened in arabian sea and north indian ocean and moved toward oman sea and persian gulf and bouncing the lands around the area. this tropical cyclone made extensive damages and human and financial causalities to countries of oman, iran, afghanistan, pakistan, and india. in t...

The Patos Lagoon coastal plume is a small-scale outflow that strongly controlled by meteorological tides. However, the riverine discharge of lagoon subject to high decadal variability. Hence, amount alters scale this and its effects over inner shelf environment. This study uses hydrodynamic simulations Lagrangian model estimate spreading under two different conditions.Through parameters, we cha...

We present the first systematic spectropolarimetric study of Luminous Blue Variables (LBVs) in the Galaxy and the Magellanic Clouds, in order to investigate the geometries of their winds. We find that at least half of our sample show changes in polarization across the strong Hα emission line, indicating that the light from the stars is intrinsically polarized and therefore that asphericity alre...

We present a detailed spectroscopic analysis of the H and He i spectrum of the Luminous Blue Variable (LBV) P Cygni. The observational constraints for our investigation are given by the mean optical and near-IR spectra obtained by Stahl et al. (1993) and published UV, optical, IR and radio continuum measurements of the star. Within the parameter domain of interest we have investigated how line ...