Seafloor character--Offshore Pigeon Point, California

This part of DS 781 presents the seafloor-character map Offshore of Pigeon Point, California. The raster data file is included in "SeafloorCharacter_OffshorePigeonPoint.zip," which is accessible from http://dx.doi.org/10.5066/F7513W80
This raster-format seafloor character map shows four substrate classes Offshore of Pigeon Point, California. The substrate classes mapped in this area have been further divided into the following California Marine Life Protection Act depth zones and slope classes: Depth Zone 2 (intertidal to 30 m), Depth Zone 3 (30 to 100 m), Slope Class 1 (0 degrees - 5 degrees), and Slope Class 2 (5 degrees - 30 degrees). Depth Zone 1 (intertidal), Depth Zones 4-5 (greater than 100 m), and Slopes Classes 3-4 (greater than 30 degrees) are not present in the region covered by this block. The map is created using a supervised classification method described by Cochrane (2008), available at http://doc.nprb.org/web/research/research%20pubs/615_habitat_mapping_workshop/Individual%20Chapters%20High-Res/Ch13%20Cochrane.pdf.
References Cited:
California Department of Fish and Game, 2008, California Marine Life Protection Act master plan for marine protected areas; Revised draft: California Department of Fish and Game, accessed April 5 2011, at http://www.dfg.ca.gov/mlpa/masterplan.asp.
Cochrane, G.R., 2008, Video-supervised classification of sonar data for mapping seafloor habitat, in Reynolds, J.R., and Greene, H.G., eds., Marine habitat mapping technology for Alaska: Fairbanks, University of Alaska, Alaska Sea Grant College Program, p. 185-194, accessed April 5, 2011, at http://doc.nprb.org/web/research/research%20pubs/615_habitat_mapping_workshop/Individual%20Chapters%20High-Res/Ch13%20Cochrane.pdf.
Sappington, J.M., Longshore, K.M., and Thompson, D.B., 2007, Quantifying landscape ruggedness for animal habitat analysis--A case study using bighorn sheep in the Mojave Desert: Journal of Wildlife Management, v. 71, p. 1419-1426.

本DS 781数据集的此部分展示了加利福尼亚州鸽子角（Pigeon Point）近海的海底特征图（seafloor-character map）。栅格数据（raster data）文件包含在"SeafloorCharacter_OffshorePigeonPoint.zip"中，可通过http://dx.doi.org/10.5066/F7513W80获取。

本栅格格式海底特征图展示了加利福尼亚州鸽子角近海的四类底质分类。该区域绘制的底质分类进一步被划分为以下《加利福尼亚海洋生物保护法》（California Marine Life Protection Act）深度带与坡度等级：深度带2（潮间带至30米）、深度带3（30米至100米）、坡度等级1（0°~5°）以及坡度等级2（5°~30°）。深度带1（潮间带）、深度带4~5（100米以上）以及坡度等级3~4（30°以上）在本次覆盖区域中均不存在。本地图采用Cochrane（2008）所述的监督分类法（supervised classification method）制作，相关文档可通过http://doc.nprb.org/web/research/research%20pubs/615_habitat_mapping_workshop/Individual%20Chapters%20High-Res/Ch13%20Cochrane.pdf查阅。

引用文献：
加利福尼亚州鱼类与野生动物部，2008年，《加利福尼亚海洋生物保护区海洋生物保护法总体规划》；修订草案：加利福尼亚州鱼类与野生动物部，2011年4月5日查阅，http://www.dfg.ca.gov/mlpa/masterplan.asp。
Cochrane, G.R.，2008年，声呐数据的视频监督分类用于海底栖息地制图，收录于Reynolds, J.R.与Greene, H.G.编辑的《阿拉斯加海洋栖息地制图技术》：费尔班克斯，阿拉斯加大学，阿拉斯加海洋资助大学项目，第185-194页，2011年4月5日查阅，http://doc.nprb.org/web/research/research%20pubs/615_habitat_mapping_workshop/Individual%20Chapters%20High-Res/Ch13%20Cochrane.pdf。
Sappington, J.M.、Longshore, K.M.与Thompson, D.B.，2007年，量化动物栖息地分析的地形粗糙度——以莫哈韦沙漠大角羊为例：《野生动物管理杂志》，第71卷，第1419-1426页。