An Evaluation Method of Underwater Ocean Environment Safety Situation Based on D-S Evidence Theory

Table 1

The risk intervals.

Factors	VS	MS	GS	MD	VD
Ocean current (m/s)	[0.0, 1.0]	(1.0, 2.0]	(2.0, 3.0]	(3.0, 4.0]	(4.0, +)
Tide current (m/s)	[0.0, 0.6]	(0.6, 1.0]	(1.0, 1.5]	(1.5, 2.0]	(2.0, +)
Pycnocline ()	[0.0, 0.2]	(0.2, 0.4]	(0.4, 0.6]	(0.6, 0.8]	(0.8, +)