uwacan.propagation.seabed_properties

seabed_properties = {'coarse sand': {'grain size': 0.5, 'speed of sound': 1875.0}, 'coarse silt': {'grain size': 4.5, 'speed of sound': 1615.5}, 'fine sand': {'grain size': 2.5, 'speed of sound': 1727.9999999999998}, 'fine silt': {'grain size': 6.5, 'speed of sound': 1536.0}, 'medium sand': {'grain size': 1.5, 'speed of sound': 1797.0}, 'medium silt': {'grain size': 5.5, 'speed of sound': 1572.0}, 'very coarse sand': {'grain size': -0.5, 'speed of sound': 1960.5}, 'very fine sand': {'grain size': 3.5, 'speed of sound': 1668.0000000000002}, 'very fine silt': {'grain size': 7.5, 'speed of sound': 1507.4999999999998}}

Dict with seabed properties.

Properties included are grain size and speed of sound (compressional). Included substrates are

• very coarse sand

• coarse sand

• medium sand

• fine sand

• very fine sand

• coarse silt

• medium silt

• fine silt

• very fine silt

These substrates are the keys to the dict.

Based on Ainslie, M.A. Principles of Sonar Performance Modeling, Springer-Verlag Berlin Heidelberg, 2010.