Special Publications are thematic products on a particular subject, usually fairly narrowly defined and of special interest. DGS Special Publications include multi-paper volumes, posters, charts, and booklets, and range from less technical to highly technical, depending on the subject.
(Newark, DE: Delaware Geological Survey, University of Delaware, 2017-09) Wang, L.T
The Delaware Geological Survey led a multi-agency, state and federal effort (including DelDOT, DNREC, USGS, and NOAA) to secure funds from the Hurricane Sandy Relief appropriation to collect new, high-quality LiDAR for the entire state of Delaware. LiDAR, which stands for Light Detection and Ranging, is a remote sensing method that uses light in the form of a pulsed laser to measure distances from a source to a target object. Typically, a LiDAR device is attached to the bottom of a plane and is pointed at the ground. The time it takes the pulse to return represents the distance it traveled and can be used to generate precise, three-dimensional information about the landscape below and its surface characteristics.
Shown here is an elevation dataset derived from the LiDAR data that will help to enhance watershed modeling for predicting stream flooding, produce up-to-date topographic maps, predict and assess the impacts of storm surge and sea-level rise, improve our geologic and land-use mapping, measure changes in marshes and wetlands, and much more.