Images

A channel-like feature is visible on the lava lake surface within Halemaʻumaʻu crater at Kīlauea Volcano's summit. This feature originates from the influx of lava from the western fissure, just out of view on the bottom of the photograph. USGS photo by M. Patrick on 12/31/2020. 

The view from Kīlauea Volcano's western caldera rim shows the eastern portion of the lava lake in Halemaʻumaʻu crater. The main island is visible in the bottom of the photograph, and smaller islands can be seen above it (to the east). USGS photo by M. Patrick on 12/31/2020. 

View of the northern portion of the lava lake within Halemaʻumaʻu crater at Kīlauea Volcano's summit. Smaller islands present in the northeastern portion of the lava lake are visible. USGS photo by M. Patrick on 12/31/2020. 

The western fissure in Halemaʻumaʻu wall remains active. Glowing vents and a prominent spatter cone are visible in this photo. This view looks steeply down from Kīlauea's west caldera rim, and the lava lake surface is visible in the background. USGS photo by M. Patrick on 12/31/2020. 

View of the northern portion of the lava lake within Halemaʻumaʻu crater at Kīlauea Volcano's summit. Smaller islands present in the northeastern portion of the lava lake are visible. USGS photo by M. Patrick on 12/31/2020. USGS photo by M. Patrick on 12/31/2020. 

This map of Halema‘uma‘u at the summit of Kīlauea shows 20 m (66 ft) contour lines (dark gray) that mark locations of equal elevation above sea level (asl).

Yellowstone rangers -- and tourists, too! -- can determine the height of a geyser eruption with some simple trigonometry.

Devin McGinty collecting measurements in the field including surveying and installing a new staff gage. 

Dr. Graham Sextone downloading weather station data in Rocky Mountain National Park. Station ID 401719105394311

Remote-Sensing Coastal Change project field collections at the Head of the Meadow Bay in Massachusetts.

Zoomed image of a Fin Whale (Balaenoptera physalus) breaking the surface.

As part of the Remote Sensing of Coastal Change and Florence Supplemental projects we have been developing novel workflows for repeat-mapping of ­­­coastal environments at order decimeter resolution over up to hundreds of kilometers in a single day, using Structure-from-Motion photogrammetry or SfM, from crewed aerial platforms.

Hinkley Valley, in the central to western Mojave Desert of southeastern California, has a long historical record owing to its position as a crossroads for rail and road traffic and its position adjacent to the Mojave River.

Zoomed image of a group of adult and immature Western Gulls (Larus occidentalis).

Zoomed image of a Humpback Whale (Megaptera novaeangliae) and a group of shearwaters feeding in southern California.

Hydrologic Technician Matt Bach measures discharge in Ashwaubenon Creek near Little Rapids, WI (NWIS site: 04085068) on May 21, 2020, as part of a cooperative project with NEWWater (Green Bay Metropolitan Sewage District) utilizing an adaptive management approach to meet phosp

Hydrologic Technician Matt Bach measures discharge in Ashwaubenon Creek near Little Rapids, WI (NWIS site: 04085068) on May 21, 2020, as part of a cooperative project with NEWWater (Green Bay Metropolitan Sewage District) utilizing an adaptive management approach to meet phosp

Hydrologist downloading water-level sensor deployed for summer as part of an ecohydro study in *H.J. Andrews Experimental Forest. *USGS Integrated Ecohydrological Science - USFS & Oregon State University *Patrick Haluska

Left: magnified view of erupted material, including Pele’s hair and tears, as seen under a microscope (USGS Photo by K. Lynn on 12/26/2020). Middle: Zoomed in electron image of the tephra, where greyscale indicates the relative abundance of iron (Fe).

Jeniffer Soto Perez (left) and Emily Richardson (Right) prepare water quality sample bottles onboard the RV Landsteiner during a high-resolution water quality mapping survey.

Katy O’Donnell monitors readings from different instruments of the flow-through system during a high-resolution water quality mapping survey onboard the RV Landsteiner along the Sacramento River in West Sacramento, CA.