Paleoshorelines--Offshore Monterey Map Area, California

This part of DS 781 presents data for the paleoshorelines for the geologic and geomorphic map of Offshore Monterey, California. The vector data file is included in "Paleoshorelines_OffshoreMonterey.zip," which is accessible from http://dx.doi.org/10.3133/ofr20161110. Sea level has risen about 125 to 130 m over about the last 21,000 years (for example, Stanford and others, 2011), leading to broadening of the continental shelf, progressive eastward migration of the shoreline, and associated transgressive erosion and deposition. Sea-level rise was apparently not steady, leading to development of a submerged shoreline along the flank of Carmel Canyon (water depths of 80 to 90 m) during a relative stillstand. Paleoshorelines were primarily mapped by interpretation of bathymetry and backscatter data. The bathymetry and backscatter data were collected between 2006 and 2009. References Cited Stanford, J.D., Hemingway, R., Rohling, E.J., Challenor, P.G., Medina-Elizalde, M., and Lester, A.J., 2011, Sea-level probability for the last deglaciation—A statistical analysis of far-field records: Global and Planetary Change, v. 79, p. 193–203, doi:10.1016/j.gloplacha.2010.11.002.DS 781的本部分提供了加利福尼亚州蒙特雷近海地质与地貌图所用的古海岸线（paleoshorelines）数据。矢量数据文件收录于"Paleoshorelines_OffshoreMonterey.zip"，可通过http://dx.doi.org/10.3133/ofr20161110获取。 过去约21000年间，海平面累计上升约125至130米（Stanford等，2011），导致大陆架范围拓宽、海岸线持续向东迁移，并伴随相应的海侵侵蚀与沉积作用。海平面上升过程并非匀速，这使得卡梅尔峡谷侧翼（水深80至90米）区域在相对海平面稳定期形成了淹没型古海岸线。 古海岸线主要通过水深测量数据（bathymetry）与反向散射数据（backscatter data）解译完成填绘。上述水深及反向散射数据采集于2006至2009年。 参考文献 Stanford, J.D.、Hemingway, R.、Rohling, E.J.、Challenor, P.G.、Medina-Elizalde, M. 及 Lester, A.J.，2011，末次冰消期海平面概率——远场记录的统计分析：《全球与行星变化》（Global and Planetary Change），第79卷，第193–203页，doi:10.1016/j.gloplacha.2010.11.002。