On left, an example of a lidar image created from the “point cloud” that shows objects’ reflectivity near the Santa Cruz Beach Boardwalk and the mouth of the San Lorenzo River. On right, a digital still image overlaid onto the lidar “point cloud” data gives it a realistic 3D look.
Before and After Images
The USGS has science based work that often requires the comparison of two geographic areas over time. Though scientific data is critical to understanding changes over time, visually seeing those changes is a powerful tool in support of that data.
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On left, an example of a lidar image created from the “point cloud” that shows objects’ reflectivity near the Santa Cruz Beach Boardwalk and the mouth of the San Lorenzo River. On right, a digital still image overlaid onto the lidar “point cloud” data gives it a realistic 3D look.
Santa Cruz Main Beach, El Nino
Photographs are of the Santa Cruz Main Beach before and after the December 11, 2014, “Super Soaker” storm that brought 2.5 inches of rain in just a few hours to Santa Cruz and 9 inches to Boulder Creek, along with big waves and swell.
Photographs are of the Santa Cruz Main Beach before and after the December 11, 2014, “Super Soaker” storm that brought 2.5 inches of rain in just a few hours to Santa Cruz and 9 inches to Boulder Creek, along with big waves and swell.
Daylight and fluorescent images of a Montastrea caverno
Daylight and fluorescent images of a Montastrea cavernosa coral colony growing on the seawall at Ft. Jefferson, Dry Tortugas National Park. The brownish color of the coral in daylight is largely attributable to chlorophyll contained within the symbiotic algae harbored by the coral.
Daylight and fluorescent images of a Montastrea cavernosa coral colony growing on the seawall at Ft. Jefferson, Dry Tortugas National Park. The brownish color of the coral in daylight is largely attributable to chlorophyll contained within the symbiotic algae harbored by the coral.
Daylight and fluorescent images of two coral colonies
Daylight and fluorescent images of two coral colonies, Diploria clivosa (left) and Orbicella faveolata (right) growing on the seawall at Ft. Jefferson, Dry Tortugas National Park. The two colonies are separated by an area of dead coral that has been colonized by algae.
Daylight and fluorescent images of two coral colonies, Diploria clivosa (left) and Orbicella faveolata (right) growing on the seawall at Ft. Jefferson, Dry Tortugas National Park. The two colonies are separated by an area of dead coral that has been colonized by algae.
Hurricane Harvey Flooding
Extensive flooding inundated the Gulf Coast of Texas after Hurricane Harvey made landfall as a Category 4 hurricane on August 25, 2017. Among the many waterways in southeastern Texas that exceeded flood stage was the Brazos River, which flows past Houston to its west and to the Gulf of Mexico at Freeport.
Extensive flooding inundated the Gulf Coast of Texas after Hurricane Harvey made landfall as a Category 4 hurricane on August 25, 2017. Among the many waterways in southeastern Texas that exceeded flood stage was the Brazos River, which flows past Houston to its west and to the Gulf of Mexico at Freeport.