Meteotsunami: Gausian pressure and flat bottom

• Theory

  Meteotsunami

• Parameter definition

  Wind and Pressure Field

• Model setup

Model configuration: Model dimensions: 100 km x 600 km. Water depth is 40 m in the whole domain. Pressure source is an elliptical shape Gaussian distribution described in the section of METEO-MODULE in INTRODUCTION. The moving speed of the source is specified as 20 m/s which is close to the critical speed to make Proudman Resonance.

• input.txt is in the folder /simple_cases/meteo_tsunami/

In input.txt:

Parallel Info (if use parallel)

PX = 4

PY = 1

Depth

DEPTH_TYPE = FLAT

DEPTH_FLAT = 40.0

Dimensions

Mglob = 600

Nglob = 100

Grid sizes

DX = 500.0

DY = 500.0

Set up time

TOTAL_TIME = 30000.0

PLOT_INTV = 360.0

PLOT_INTV_STATION = 50000.0

SCREEN_INTV = 360.0

Add

MeteoGausian = T

METEO_GAUSIAN_FILE = meteo_data.txt

You need specify your pressure source in the file: meteo_data.txt in the current directory.

Meteo data file

NJ

time, x, y, dP(mb), SigmaX, SigmaY, Angle(0 = +x direction)

0.0 0.0 25000.0 5.0 10000.0 100000.0 0.0

36000.0 720000.0 25000.0 5.0 10000.0 10000.0 0.0

Output

RESULT_FOLDER = output/

ETA = T

Hmax = T

Hmin = T

OUT_METEO = T (T will have output of pressure distribution)

post-processing

plot_wave.m in /simple_cases/meteo_tsunami/

Model result

The figure shows Proudman Resonance produced by the moving pressure source.