Navifacial conditions in the north-west Pacific Ocean

1977 ◽  
Vol 33 (4) ◽  
pp. 183-189 ◽  
Author(s):  
J. R. Donguy ◽  
C. Henin
Keyword(s):  
Pacific Ocean ◽  
West Pacific ◽  
North West ◽  
West Pacific Ocean ◽  
The North

scholarly journals Corrigendum to

2021 ◽  
pp. 105644
Author(s):  
Ravi Shankar Pandey ◽  
Yuei-An Liou
Keyword(s):  
Pacific Ocean ◽  
Tropical Storm ◽  
Storm Tracks ◽  
West Pacific ◽  
North West ◽  
Atmospheric Research ◽  
West Pacific Ocean ◽  
The North

scholarly journals Comparative analysis of TEC disturbances above regions of tropical cyclones in the north-west Pacific Ocean

10.12737/6594 ◽  
2015 ◽  
Vol 1 (1) ◽  
pp. 63-74
Author(s):  
Анна Полякова ◽  
Anna Polyakova ◽  
Наталья Перевалова ◽  
Natalia Perevalova
Keyword(s):  
Pacific Ocean ◽  
Tropical Cyclones ◽  
Electron Content ◽  
Total Electron ◽  
West Pacific ◽  
Ionospheric Response ◽  
North West ◽  
West Pacific Ocean ◽  
The North ◽  
Typhoon Intensity

We studied ionospheric total electron content (TEC) disturbances associated with tropical cyclones (TCs). The study was based on the statistical analysis of six cyclones with different intensity which occurred in the North-West Pacific Ocean in September–November 2005. We used TEC data from the international network of two-frequency ground-based GPS receivers and NCEP/NCAR Reanalysis meteorological archive. TEC variations of different period ranges (2–20 and 20–60 min) are shown to be more intense during TC peaks under quiet geomagnetic conditions. The highest TEC variation amplitudes are registered when the wind speed in the cyclone and the TC area are maximum. The intensification of TEC disturbances is more pronounced when several cyclones occur simulta-neously. We found that the ionospheric response to TC can be observed only after the cyclone has reached typhoon intensity. The ionospheric response is more pronounced at low satellite elevation angles.

scholarly journals ON SOUND SCATTERING IN THE UPPER LAYER AND ON THE SHELF OF THE NORTH-WEST PACIFIC OCEAN

2020 ◽  
Author(s):  
В.А. Буланов ◽  
И.В. Корсков ◽  
А.В. Стороженко
Keyword(s):  
Pacific Ocean ◽  
Marine Environment ◽  
Sea Water ◽  
Peter The Great Bay ◽  
Sound Scattering ◽  
West Pacific ◽  
North West ◽  
Scattering Coefficients ◽  
West Pacific Ocean ◽  
The North

Представлены результаты исследований рассеяния звука в верхнем слое морской воды в северо-западной части Тихого океана. Измерения коэффициентов рассеяния звука проводились на различных частотах от 12 до 100 кГц на шельфе и в открытом океане. Исследования представляли интерес в связи с возможностью оперативно в процессе движения судна проводить мониторинг изменчивости структуры морской среды. Проведение долговременных исследований рассеяния звука на планктоне и других микронеоднородностях морской среды в бухте Витязь залива Петра Великого Японского моря с применением акустических донных систем позволило определить вариации рассеяния звука, связанного с наличием пузырьков и суточных вариаций планктона в толще моря. Показаны возможности и проведены оценки биомассы вдоль длинных трасс в различных морях северо-западной части Тихого океана на основе рассеяния звука. The results of studies of sound scattering in the upper layer of sea water in the North-Western Pacific Ocean are presented. Sound scattering coefficients were measured at various frequencies from 12 to 100 kHz on the shelf and in the open ocean. The research was of interest because it was possible to monitor the variability of the marine environment structure quickly during the ship’s movement. Long-term studies of sound scattering on plankton and other micro-heterogeneities of the marine environment in Vityaz Bay, Peter the Great Bay, Sea of Japan, using acoustic bottom systems, allowed us to determine variations in sound scattering associated with the presence of bubbles and diurnal variations of plankton in the sea column. The possibilities of biomass along long trails in various seas of the North-West Pacific Ocean based on sound scattering are shown and estimated.

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