Images

Meet the team of USGS scientists who were deployed to assess land deformation and movement after a large M6.4 earthquake struck Puerto Rico on January 7, 2020.

USGS team with Wanda Vazquez-Garced, governor of Puerto Rico. From left to right: Lindsay Davis, Wanda Vazquez, Dianne Lopez-Trujillo, Jonathan Godt, Donyelle Davis, Alex Grant

USGS scientists Thomas L. Pratt and Alena L. Leads, along with Dr. Elizabeth Vanacore, associate research professor at University of Puerto Rico, analyze data in earthquake monitoring and recording equipment amid aftershocks across the island's southern coast.

Photo (L-R) Jose Cancel of Puerto Rico Seismic Network (PRSN), Alena Leeds of USGS and Javier Santiago of PRSN install a temporary seismometer at Sabana Yeguas in southwestern Puerto Rico on Jan. 10, 2020.

USGS scientists Nicholas van der Elst and Alan Yong installing a seismometer near the 2019 Ridgecrest earthquakes in southern California in order to record its aftershocks.

View to northeast from southwestern Arctic National Wildlife Refuge-1002 Area with ice in Camden Bay in distance. In foreground, red-weathering rocks are Hue Shale (oil-prone source rock with is present throughout 1002 Area) and dark gray rocks are Kemik Sandstone (lateral equivalent to Thomson sandstone, main reservoir in Pt. Thomson field).

Southward view of tundra surface and lakes on Canning River Delta near northwestern corner of Arctic National Wildlife Refuge-1002 Area.

Oil-saturated Miocene or younger sandstone in the Sagavanirktok Formation exposed at Angun Point on the coast of the Arctic Ocean, northeastern Arctic National Wildlife Refuge-1002 Area.

This is remote capture image of a Yosemite toad seen crossing beneath "toad road" structure built atop a forest road in the Sierra National Forest. Reseachers are exploring tools, such as this elevated road structure, or "toad road," to reduce vehicle strikes to this threatened species.

A well at a restored prairie on Lake Agassiz beach ridge, Glacial Ridge National Wildlife Refuge

Morning fog over beach ridges at Glacial Ridge National Wildlife Refuge

Prairie Dog, Glacial Ridge National Wildlife Refuge

View to the southeast from near the Canning River Delta. Visible in foreground are permafrost polygons cut by caribou trails. 

Arctic National Wildlife Refuge

Northward view to coast of Canning River Delta with thin barrier island and ice pack beyond.

Northward view towards Camden Bay from west-central Arctic National Wildlife Refuge-1002 Area near the Katakturuk River. Patterns in foreground are permafrost polygons.

Northward view from southeastern corner of Arctic National Wildlife Refuge-1002 Area near Okerokorik River showing gently rolling topography typical of the southern coastal plain.

View to the northeast from near the eastern boundary of the Arctic National Wildlife Refuge-1002 Area west of the Aichilik River.

Geologists examine oil-saturated sand (unconsolidated), sandstone (dark orange-brown rocks), and concretions (light orange rocks) along the Jago River in the Arctic National Wildlife Refuge-1002 Area, about 18 miles southeast of Kaktovik.  

Fog Over Glacial Ridge National Wildlife Refuge

Photo of stream in urban environment with green lawn beside it. Photo credit: Alan Cressler USGS

Animated GIF of bighorn sheep pulled from the "Wildlife on the Nevada National Security Site" video by the USGS.