My research pairs orbital remote sensing with fieldwork in places that look, and sometimes behave, like Mars. In these environments we test instruments, collect samples, and learn how habitats and alteration minerals appear from the ground, from drones, and from orbit.

Námafjall geothermal area, northeast Iceland · July–August 2022

Hyperspectral imaging of fumarolic alteration

Tripod-mounted hyperspectral imaging and sampling of fumaroles, sulfur deposits, and acid-altered ground at one of Iceland's most active geothermal fields.

Hyperspectral camera on a tripod below a fumarole steam plume
Hyperspectral imaging below a fumarole plume
Gloved hand holding a layered, hydrothermally altered rock sample
Altered sample
Yellow sulfur crystals on red-brown altered ground
Sulfur deposits
Field station with equipment cases and a tripod-mounted camera on a hillside
Imaging station
Steam rising from fumaroles across red and yellow altered ground
Active fumaroles

High Andes near Láscar volcano and Laguna Lejía, Chile · November 2018

Altiplano field campaign

Fieldwork above 4,000 m in the Chilean Altiplano, among volcanoes, salars, wetlands, and fields of penitentes, the blade-like snow and ice formations that form under intense high-altitude sunlight.

Field of white penitentes ice blades below a dark volcanic peak
Penitentes below a volcanic summit
Close view of penitentes ice blades on a rocky slope
Penitentes
View across Altiplano volcanoes under a deep blue sky
Altiplano volcanoes
Field team with packs resting on a rocky slope above a wide basin
Field team on the ascent
White salt crusts and grasses below a rust-colored rock outcrop
Salt-crusted wetland
Dark volcanic cone rising above golden grassland
Near Laguna Lejía

Salar de Pajonales, Chile · October 2019

A Mars-analog salar

A high-altitude salt flat in the Atacama region whose gypsum-rich deposits serve as an analog for ancient Martian paleolake basins and the habitats they may have hosted.

Rolling golden hills under a pink dawn sky
Dawn over the basin
Volcanic summit lit orange by alpenglow above a dark valley
Alpenglow
Orange sunset behind dark ridgelines
Sunset from camp

Meradalir eruption, Reykjanes Peninsula, Iceland · August 2022

A volcano in eruption

The 2022 Meradalir fissure eruption: an active spatter cone, fresh lava flows, and still-glowing crust.

Lava fountaining from a spatter cone across a black lava field
Lava fountaining from the vent
Two people in orange hi-vis vests on the new lava field
On the new lava field
Glowing orange crack in grey fresh lava crust
Still-glowing crust
Spatter cone with glowing lava beneath grey skies
Spatter cone

Roosevelt Hot Springs, Utah · August 2024

Sampling an active geothermal field

Gridded sampling across steaming ground, colorful hydrothermal deposits, and altered rock in the geothermal area near Roosevelt Hot Springs in southwestern Utah.

Field team kneeling to sample within a grid of orange flags on pale altered ground
Sampling within a flagged grid
Close view of red, orange, and green banded hydrothermal deposits
Banded hydrothermal deposits
Green crusted terraces edged by pale altered rock
Green crusted terraces
Steam rising from pale altered ground in a valley under bright sun
Steaming valley floor
A dark crust filling a channel cut into pale altered ground
Dark-crusted channel
Steam vents along a pale channel with a vehicle and cumulus clouds beyond
Steam vents along the channel