Images

Students from the Teaching Through Technology (T3) Alliance, University of Hawai‘i at Hilo Upward Bound summer program, install an air-quality monitoring station outside the Dragon's Eye Learning Center on Papaya Farms Road. Photo courtesy of Adam Low, T3 Alliance.

HVO geologist Matthew Patrick being interviewed on the Kīlauea lava-flow field for a documentary about Hawaiian volcanism. Growing lava delta (left background) steaming at the point of ocean entry.

A view of a vegetated inland coastline overlooking the water on Dauphin Island, Alabama. The island protects mainland Alabama’s coastal communities and resources from storms, while also providing recreational opportunities (fishing, beach tourism, etc.) and other economic benefits to the local community and state.

A panoramic view on Dauphin Island, Alabama. The island protects mainland Alabama’s coastal communities and resources from storms, while also providing recreational opportunities (fishing, beach tourism, etc.) and other economic benefits to the local community and state.

William Clark's 1814 map, indicating the route of John Colter during the winter of 1807-1808. (Library of Congress, Geography and Map Division, Washington, D.C.)

 Major ions such as Sulfate and Chloride are measured with an Ion Chromatograph

A well sensor continuously monitors salinity, temperature, and water level in a salt marsh, Cape Cod, MA

Image from video camera along Sunset State Beach in Watsonville, CA, looking northwest. Every half hour during daylight hours, the camera shoots video for 10 minutes.

Meagan Gonneea checks on instruments at a tidal creek in Great Pond, Falmouth, MA. Daily tides drive exchange between coastal wetlands and adjacent estuaries. Here we have instrumented a tidal channel to measure those fluxes over a tidal cycle. When the marsh floods, material is imported from the estuary.

Amphitheater Mountain and Soda Butte Creek viewed from the northeast entrance road. National Park Service photo by Jacob Frank, June 29, 2017.

Gamma well detectors are used to determine the ages of sediments based on activities of natural and anthropogenic radionuclides

Dissolved inorganic carbon (DIC) in water samples is measured with a UIC, Inc. Coulometer

The urban reef at Isla Verde supports various species of protected corals, sea turtles, and crustaceans, as well as many Caribbean fish. It also protects the International Airport and numerous homes and resorts on the coast.

Aerial photograph looking southwest along Breton Island, Louisiana, taken July 2013

An HVO geologist walks along the summit trail, with Mauna Kea in the background.

HVO geologists made a routine visit to the webcam monitoring Halema‘uma‘u. No changes were observed in the pit, but views were hampered by poor weather and thick fog.

The USGS collaborates with NASA, the University of Florida, National Park Service, and the U.S. Fish and Wildlife Service to assess coastal erosion hazards affecting space program infrastructure, habitat, and wildlife populations.

Serapeum, a Roman Marketplace in Pozzuoli, Italy, records deformation of Campi Flegrei caldera over two millennia. It was built above sea level about 2000 years ago, but mollusk borings on the large marble columns indicate that it subsided by 7 meters (23 feet) below sea level before being uplifted above sea level once more in the past several hundred years.

Map showing the minimum area covered by volcanic ash from eruptions of Valles Ca

HVO staff visited the summit of Mauna Loa on foot to repair the webcam. The weather was perfectly clear, and views of the caldera floor showed nothing unusual.

USGS geologists Dave Foster and Wayne Baldwin and Andrew Green (University of
KwaZulu-Natal) observe coastal hazards on the Lower Cape, Massachusetts.