Water Types

water_type 1 = Jerlov Type I

water_type 2 = Jerlov Type IA

water_type 3 = Jerlov Type IB

water_type 4 = Jerlov Type II

water_type 5 = Jerlov Type III

In addition to these standard settings the user can have total control over the water turbidity by settingwater_type to a value of 0. In this case the ocean file must be modified to include four more lines at the bottom, as shown in the example below. In these lines the user explicitly provides the absorption, scattering, extinction, diffuse extinction, and reflectivity coefficients in each color band. Although physically these five quantities are dependent on each other, the water_type 0 option allows the user to independently control them.

RenderWorld_data_file ocean 5 5

n_points_x 512 1

n_points_y 512 1

dx 1.0

dy 1.0

spectrum_file spec1.dat

generate_file yes

random_seed 1451

end

number_aux_oceans 0

number_disturbances 0

box_depth 20.

reference_time 0

surface_type round

radius 6371230

max_distance 100

double_distance 70

wind_type fixed

wind_direction 90

wind_velocity 8

waves yes

water_type 0

external_exact no

glitter no

whitecaps no

textures no

sunbeams no

exclude_items no

number_of_bands 3

band_ids 1 2 3

index_of_refraction 1.34 1.34 1.34

absorption 0.1 0.05 0.07

scattering 0.3 0.1 0.2

extinction 0.4 0.15 0.27

diffuseK 0.1 0.07 0.15

reflectivity 0.04 0.05 0.07

end

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