TSUNAMI MAGNITUDE SCALE BASED ON DEEP-OCEAN ASSESSMENT AND REPORTING OF TSUNAMIS (DART) BUOY WAVE HEIGHT DATA

2020 ◽  
Author(s):  
Mary Frances P. Gabito ◽  
◽  
Jascha Polet
Keyword(s):  
Wave Height ◽  
Deep Ocean ◽  
Magnitude Scale ◽  
Dart Buoy ◽  
Height Data

scholarly journals THỬ NGHIỆM ĐỒNG HOÁ SỐ LIỆU ĐỘ CAO SÓNG TRONG KHU VỰC BIỂN ĐÔNG BẰNG PHƯƠNG PHÁP LỌC KALMAN TỔ HỢP

2019 ◽  
Vol 18 (4) ◽  
pp. 358-367
Author(s):  
Nguyen Trung Thanh ◽  
Nguyen Minh Huan ◽  
Tran Quang Tien
Keyword(s):  
Probability Theory ◽  
Kalman Filter ◽  
Data Assimilation ◽  
Wave Height ◽  
Ensemble Kalman Filter ◽  
Wave Model ◽  
The Past ◽  
Ocean Data Assimilation ◽  
The World ◽  
Height Data

Advances in ocean data assimilation have been improved with the power of computers over the past 30 years, but the theory of data assimilation has a long history with the probability, theory of mathematical simulation, and traditional numerical calculations. Therefore, the research and application of data assimilation technology in oceanography have been widely carried out in the world and have gotten considerable achievements. In Vietnam, the study of data assimilation has also been applied in the meteorology and has attracted the increasing interest in oceanography. This paper presents the results of the study to calculate the wave height data from satellites combined with measured wave height data at MSP1 station of Vietsovpetro using the Ensemble Kalman Filter (EnKF) method associated with SWAN wave model in the Eastern Vietnam Sea.

scholarly journals The Condition of Significant Wave Height and Wind Velocity in Makassar Strait during 2017

2019 ◽  
Vol 3 (1) ◽  
pp. 179-189
Author(s):  
Hanah Khoirunnisa ◽  
Shofia Karima
Keyword(s):  
Energy Spectrum ◽  
Wind Velocity ◽  
Wave Height ◽  
Significant Wave Height ◽  
Secondary Data ◽  
Weather Forecasts ◽  
Significant Wave ◽  
A Value ◽  
One Year ◽  
Height Data

This study aims to look at the conditions and characteristics of significant wave height and its relationship to wind velocity in the Makassar Strait in 2017. The data used in this study are bathymetry data from GEBCO with a resolution of 30 seconds, significant wave height data (Hs) with a resolution of 0.25 x 0.25 as well as wind velocity and direction with a resolution of 0.25 x 0.25 which are secondary data results from the European Center for Medium-Range Weather Forecasts (ECMWF) with a span of one year in 2017. The method used in this research is an analysis of the energy spectrum of significant wave height using Fast Fourier Transform. In addition, wind velocity and direction are processed by using GrADS software to see the visual conditions. Based on this study, it can be concluded that wind velocity is strongly associated with significant wave height values. This can be seen at each sample point in the Makassar Strait, where when the value of wind velocity is high, the value of significant wave height has the same conditions, and vice versa. The wind velocity value has a maximum value in the Makassar Strait during the east season with a value of more than 4.5 m/s. The highest energy spectrum occurs at point 3 in the Makassar Strait, which is 7303 m2 with a period of 6 months.

scholarly journals Operational numerical wind-wave model for the Black Sea

2000 ◽  
Vol 1 (1) ◽  
pp. 65
Author(s):  
A. KORTCHEVA ◽  
G. KORTCHEV ◽  
J. M. LEFEVRE
Keyword(s):  
Shallow Water ◽  
Real Time ◽  
Wave Height ◽  
Black Sea ◽  
Water Wave ◽  
Wind Wave ◽  
Wave Model ◽  
The Black Sea ◽  
Sea State ◽  
Height Data

In this paper the discrete spectral shallow water wave model named VAGBUHL1 is presented. This model is used for real-time Black Sea state forecasting. The model was verified against satellite ERS-2 altimeter wave height data.

scholarly journals Oscillating wave energy power generator for lift net fishing boat

2019 ◽  
Vol 13 (1) ◽  
pp. 354
Author(s):  
Luther Sule ◽  
Parabelem Tinno Dolf Rompas
Keyword(s):  
Wave Height ◽  
Wave Energy ◽  
Diesel Engines ◽  
Wave Power ◽  
Fishing Vessel ◽  
Power Generator ◽  
Fishing Boat ◽  
Sufficient Power ◽  
Height Data

This paper compares several designs of an oscillating wave power generator suitable for local net fishing boat in the waters of Tonyaman in the Strait of Makassar, Indonesia.  The designs were based on wave height data for the period of January to December 2016 and of the local fishing vessel construction data. Several generator designs were created to replace diesel engines used by the local fishermen to power their boats’ lamps in the night. Results showed that DESIGN 5 with Arm length to buoy (<em>L</em><sub>1</sub>) of 4 m and Arm length to pulley (<em>L</em><sub>2</sub>) of 3 m and DESIGN 6 with  <em>L</em><sub>1</sub> of 4 m and <em>L</em><sub>2</sub> of 2 m were the two designs most fitting for that purpose. Both designs could produce sufficient power ( ) to power the boats’ lamps in the shortest wave height condition (0.75 m) and the tallest wave height condition (1.5 m). At the shortest wave height condition (0.75 m), DESIGN 5 produced 14,237.58 W and DESIGN 6 produced 14,290.31 W. At the tallest wave height condition (1.5 m), DESIGN 5 and DESIGN 6 generated 28,285.31 W and 28,496.25 W of power, respectively.

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