Local and Remote Forcing Effects of Oceanic Eddies in the Subtropical Front Zone on the Mid-latitude Atmosphere in Winter

Multiple oceanic eddies coexist in the North Pacific subtropical front zone (STFZ) in winter, which can be classified into the isolated single eddies (ISO), the combined double isotropic eddies (DBL) and pairs of anisotropic eddies (PAIR). The forcings of these eddies on the mid-latitude atmosphere are investigated using Climate Forecast System Reanalysis (CFSR) data from year 1979 to 2009, which are divided into the remote and local effects in this research. In the stronger STFZ years,there are more ISO and DBL cyclonic eddies to the north but more ISO and DBL anticyclonic eddies to the south of the STFZ, meanwhile more PAIR eddies with cold to the north and warm to the south concentrated around the main axis of the STFZ. These eddy distributions enhance the strength of STFZ, intensify the propagation of upwards baroclinic waves in the lower atmosphere, and finally enhance the zonal wind at upper atmosphere, which is defined as the remote effects of the eddies. However, distinct from this basin-scale remote forcings, three types of oceanic eddies also have different local forcings on the maritime atmospheric boundary layer (MABL) over these eddies. The local effects of the ISO and DBL eddies on MABL entirely depend on the numbers and polarity of the eddy center, while the MABL response to the PAIR eddies appears at the boundary of the two eddies. Furthermore, the local effects of the three types of eddies can be traced to the middle atmosphere accompanied by local precipitation differences.

Analysis of the «zoo visitor» effect on the example of the snow leopard Uncia uncia and the Amur leopard Panthera pardus orientalis

The article presents the study results of the Moscow Zoo' visitor effect on the behavior of the snow leopard Uncia uncia and the Amur leopard Panthera pardus orientalis. It was shown that most of the time the animals were inactive or were in a shelter (on the average 86,3%). Stereotypy was typical only for the Amur leopard (19,1%). Animals were more likely to be active in the presence of 0 to 20 people. Most often, animals were in other parts of the aviary; however, stereotypy was manifested mainly in the front zone of the aviary. The Amur leopard shows aggression towards visitors who tried to get its attention and it's reaction to mens was more intense. Snow leopard did not react to visitors.

Pattern Zone Ecosystem of Mangrove in Juanga Village, Morotai Island District

ABSTRACTMangroves are one of the most important natural resources in coastal areas. Availability of various types of food that are on ecosystems is already making its presence as a local nursery, where searching for eating and also serve as a regional tourist ecosystem of mangrove. In use as Regional tourist mangrove need to attention the condition of the physical environment and the distribution pattern of zoning. Research is carried out in the month October to November 2019 in the village of Juanga Regency island of Morotai. Data zoning mangrove using the method of the combination is to combine the methods of plots to track transects, to determine the four stations of observation of each respective stations and each station is divided into three zones: zone front, zone of middle and zone back starting from the point of the outermost growth of types of mangrove constituent primary to the point of transition between sea and land. The research results of the study found 5 types of mangroves namely Rhizophora mucronata, Ceriops decandra, Rhizophora apiculata, Xylocarpus granatum and Sonneratia alba. The distribution of zoning patterns in the front zones of station I and the middle zone is dominated by Rhizophora mucronata and Rhizophora apiculata types, the rear zone is dominated by Ceriops decandra. Station II front zone is dominated by Sonneratia alba, middle zone (Rhizophora mucronata), rear zone (Ceriops decandra). At station III the front zone (Rhizophora apiculata), the middle zone and the rear zone (Ceriops decandra) while at station IV the front zone, the middle zone and the rear zone are dominated by the Ceriops decandra type.

Strain energy method for solving wave problems of a flexible thread

The paper considers the behavior of a flexible deformable thread when longitudinal and transverse waves pass through it. The processes occurring in a thread during the passage of a wave perturbation through it are analyzed under the assumption that the wave front zone is limited comparing with the length of the thread but not assuming this quantity to be of infinite smallness. In contrast to other similar works, no assumptions were made in advance about the shape of the thread in the zone of the wave perturbation passage (the fracture of the thread) and the dependence of the tension force on its elongation. The only requirement is the implementation of the general theorems of dynamics. Formulas for the relation of the thread speed before and after the passage of the wave with a change in the angle of thread inclination are obtained making possible solving wave propagation problems in a new way. The method is illustrated by new solutions to known problems, which allows comparing the obtained results with known solutions and verifying the advantages of the proposed method.

Late Mesozoic East Asian magmatic province: structure, magmatic signature, formation conditions

The Late Mesozoic igneous province of East Asia in connection with global geological events is considered. The main structure-forming events and the largest magmatic productivity of the province coincided with the peak of widely manifested plume activity in the Early Cretaceous. A geodynamic model of the magmatic province formation is proposed, relating development of the province with the complex geodynamic setting for the interaction of the convergent boundary with the hot mantle field. The Pacific marginal magmatic belt was formed in front zone of convergence where accretion of terranes occurred with prevalence of supersubduction magma-forming mechanisms. In the western part of the province outside of convergence zone an intraplate volcanic areas were formed due to activity of small mantle plumes.