Winter 2016, part A, coastal oblique aerial photographs collected from the South Carolina/North Carolina border to Assateague Island, Virginia, February 18-19, 2016

The U.S. Geological Survey (USGS) conducts baseline and storm-response photography missions to document and understand the changes in the vulnerability of the Nation's coasts to extreme storms. On February 18-19, 2016, the USGS conducted an oblique aerial photographic survey from the South Carolina/North Carolina border to Assateague Island, Virginia, aboard a Cessna 182 aircraft at an altitude of 500 feet (ft) and approximately 1,200 ft offshore (fig. 2, http://pubs.usgs.gov/ds/1029/html/ds1029_fig2.html). This mission was conducted to collect data for assessing incremental changes in the beach and nearshore area since the last survey, flown in October 2015 (http://cmgds.marine.usgs.gov/fan_info.php?fan=2015-338-FA) (Morgan, 2016, [http://dx.doi.org/10.3133/ds/995]), and the data can be used to assess future coastal change. The photographs provided are Joint Photographic Experts Group (JPEG) images. The photograph locations are estimates of the aircraft’s positions and do not indicate the location of the feature in the images (See the Navigation Data page, http://pubs.usgs.gov/ds/1029/html/ds1029_nav.html). These photographs document the configuration of the barrier islands and other coastal features at the time of the survey. ExifTool was used to add the following to the header of each photo: time of collection, Global Positioning System (GPS) latitude, GPS longitude, keywords, credit, artist (photographer), caption, copyright, and contact information. Photographs can be opened directly with any JPEG-compatible image viewer by clicking on a thumbnail on the contact sheet. All image times are recorded in Coordinated Universal Time (UTC). Table 1 (http://pubs.usgs.gov/ds/1029/html/ds1029_table.html) provides detailed information about the assigned location, name, date, and time the photograph was taken along with links to the photograph. In addition to the photographs, a Google Earth Keyhole Markup Language (KML) file is provided and can be used to view the images by clicking on the marker and then clicking on either the thumbnail or the link above the thumbnail. The KML files were created using the photographic navigation files. Note: A KML number was assigned to each photograph to assist users in navigating the Google Earth file. These numbers correspond to the site labels in Google Earth.

美国地质调查局（U.S. Geological Survey, USGS）开展基线与风暴响应摄影任务，以记录并剖析美国海岸面对极端风暴的脆弱性变化。2016年2月18日至19日，美国地质调查局搭乘塞斯纳182（Cessna 182）型航空器，在飞行高度500英尺、离岸约1200英尺的条件下，完成了从南卡罗来纳州/北卡罗来纳州边界至弗吉尼亚州阿萨蒂格岛的倾斜航空摄影测量（见图2，http://pubs.usgs.gov/ds/1029/html/ds1029_fig2.html）。本次任务旨在收集数据，以评估自2015年10月的上一次测量（Morgan, 2016，[http://dx.doi.org/10.3133/ds/995]，相关链接：http://cmgds.marine.usgs.gov/fan_info.php?fan=2015-338-FA）以来，海滩及近岸区域的增量变化，所获数据可用于评估未来海岸变迁情况。
本次提供的照片均为联合图像专家小组（Joint Photographic Experts Group, JPEG）格式图像。照片拍摄位置为航空器位置的估算值，无法直接对应图像中的地物位置（详见导航数据页面：http://pubs.usgs.gov/ds/1029/html/ds1029_nav.html）。这些照片记录了测量期间障壁岛及其他海岸地貌的形态。
研究人员使用ExifTool为每张照片的文件头添加了采集时间、全球定位系统（Global Positioning System, GPS）纬度、GPS经度、关键词、署名、创作者（摄影师）、说明、版权及联系方式等信息。用户可通过点击联系表上的缩略图，直接使用任意支持JPEG格式的图像查看器打开照片。所有图像时间均采用协调世界时（Coordinated Universal Time, UTC）记录。
表1（http://pubs.usgs.gov/ds/1029/html/ds1029_table.html）详细列出了每张照片的分配位置、名称、拍摄日期与时间，以及照片的访问链接。除照片外，本次还提供了谷歌地球关键标记语言（Google Earth Keyhole Markup Language, KML）文件，用户可通过点击标记，再点击缩略图或缩略图上方的链接，在谷歌地球中查看对应图像。该KML文件基于摄影导航文件生成。
注：为方便用户在谷歌地球文件中导航，每张照片均被分配了KML编号，该编号与谷歌地球中的站点标签一一对应。