Entity_Type:
Entity_Type_Label: 2D_variation_results_SouthCoast.nc
Entity_Type_Definition: None
Entity_Type_Definition_Source: None
Attribute:
Attribute_Label: eps
Attribute_Definition:
The series of observation scales used to determine the average variations in elevation extremes.
Attribute_Definition_Source:
Dubuc, B., Zucker, S.W., Tricot, C., Quiniou, J.F., and Wehbi, D., 1989b, Evaluating the fractal dimension of surfaces: Proceedings of the Royal Society of London Series A--Mathematical Physical and Engineering Sciences, v. 425, no. 1868, p. 113-127.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 216
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: rows
Attribute_Definition:
Row numbers corresponding to the extracted portion of the DEM used to estimate the spatial variability in the fractal dimension of the seafloor surface off the southwestern coast of Navassa Island.
Attribute_Definition_Source:
Zawada, D.G., Piniak, G.A., and Hearn, C.J., 2010, Topographic complexity and roughness of a tropical benthic seascape: Geophysical Research Letters, v. 37, 6 p., accessed October 14, 2010, at
https://doi.org/10.1029/2010GL043789.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 881
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: columns
Attribute_Definition:
Column numbers corresponding to the extracted portion of the DEM used to estimate the spatial variability in the fractal dimension of the seafloor surface off the southwestern coast of Navassa Island.
Attribute_Definition_Source:
Zawada, D.G., Piniak, G.A., and Hearn, C.J., 2010, Topographic complexity and roughness of a tropical benthic seascape: Geophysical Research Letters, v. 37, 6 p., accessed October 14, 2010, at
https://doi.org/10.1029/2010GL043789.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 881
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: avg_variations
Attribute_Definition:
Average variations in elevation extremes as a function of the observation scale, eps.
Attribute_Definition_Source:
Dubuc, B., Zucker, S.W., Tricot, C., Quiniou, J.F., and Wehbi, D., 1989b, Evaluating the fractal dimension of surfaces: Proceedings of the Royal Society of London Series A--Mathematical Physical and Engineering Sciences, v. 425, no. 1868, p. 113-127.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.27
Range_Domain_Maximum: 35.74
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: fractal_dims
Attribute_Definition:
Fractal dimension estimates for the seafloor surface off the southwestern coast of Navassa Island.
Attribute_Definition_Source:
Zawada, D.G., Piniak, G.A., and Hearn, C.J., 2010, Topographic complexity and roughness of a tropical benthic seascape: Geophysical Research Letters, v. 37, 6 p., accessed October 14, 2010, at
https://doi.org/10.1029/2010GL043789.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2.2
Range_Domain_Maximum: 2.5
Entity_and_Attribute_Overview:
Fractal computations were performed by the USGS for a portion of the seafloor surface extracted from the Navassa Island digital elevation model using the Variation Method of Dubuc and others. (1989). Algorithm implementation details are presented in Zawada and Brock (2009). For this 881-m x 881-m region off the southwestern coast of Navassa, fractal dimensions were computed by moving a 440-m x 440-m window in 1-m increments across each row and down each column of the region. Results from the Variation Method and the corresponding fractal dimension for each transect are available in the netCDF file 2D_variation_results_SouthCoast.nc.
Entity_and_Attribute_Detail_Citation:
Dubuc, B., Zucker, S.W., Tricot, C., Quiniou, J.F., and Wehbi, D., 1989b, Evaluating the fractal dimension of surfaces: Proceedings of the Royal Society of London Series A--Mathematical Physical and Engineering Sciences, v. 425, no. 1868, p. 113-127. Zawada, D.G., and Brock, J.C., 2009, A multiscale analysis of coral reef topographic complexity using Lidar-derived bathymetry: Journal of Coastal Research, SI (53), p. 6-15. (Also available at
https://doi.org/10.2112/SI53-002.1)