Research

My research centers on geology, hydrology, and atmospheric science in Texas and the broader Southwest. The work combines field collection, laboratory analysis, and archival study to better understand regional earth and water systems.

Hailstone Collection & Analysis in Texas

Thomas Nordstrand in the UTSA laboratory examining a large hailstone specimen
Laboratory analysis of a collected hailstone specimen, UTSA.

Texas is among the most hail-prone regions in the United States, yet systematic collection and physical analysis of hailstones remains underrepresented in the literature. This research involves direct field collection of hailstones during and immediately following storm events across West and Central Texas.

Collected specimens are analyzed for size distribution, internal structure, isotopic composition, and embedded particulate matter. The goal is to develop a more complete picture of hail formation dynamics in the region and to correlate physical properties with storm characteristics recorded by weather radar and surface observation networks.

Findings from this work have implications for agricultural loss assessment, insurance modeling, and the broader study of convective storm systems on the Southern Plains.

Large hailstone in a collection bag — field specimen
Field-collected specimen in preservation bag.
Hailstone measured with digital calipers — 94mm diameter
Caliper measurement — specimen DR04112019, 94mm diameter.
Hailstone on a digital scale reading 311 grams
Mass measurement — 311g specimen.
Large hailstone on a Taylor scale reading 563 grams
Mass measurement — 563g specimen.

Water Wells & River System Research

Diagram: Determination of contributing sources to artesian spring flow
Historical Photo of San Felipe Springs, Del Rio Texas (R.L., Warren)
Texas pond with aquatic vegetation — surface water study site
Surface water study site, Central Texas.

Groundwater availability is among the most pressing resource questions facing Texas and the broader Southwest. This research examines the relationship between surface water systems — rivers, streams, and ephemeral drainages — and the underlying aquifer structures that sustain them.

Field work includes water well logging, water table monitoring, and systematic sampling along river corridors in West Texas. Data collected in the field is analyzed alongside historical records and geological survey data to identify long-term trends in water availability and aquifer recharge rates.

This work contributes to regional water planning efforts and informs decisions about well placement, irrigation management, and conservation policy in semi-arid environments.

Hydrogeochemistry & Aquifer Studies

Thomas Nordstrand at a large open-pit copper mine in Chile wearing UTEP safety gear
Open-pit copper mine, Atacama region, Chile — field study on mining hydrogeology.
Copper veins visible in rock face at Mineral Park Mine, Kingman AZ
Copper vein structures — Mineral Park Mine, Kingman, AZ.

Hydrogeochemistry examines the chemical composition of groundwater and the processes that shape it — dissolution, precipitation, ion exchange, and biological activity. This research focuses on aquifer systems in the Trans-Pecos and Edwards Plateau regions of Texas, where complex carbonate geology produces distinctive water chemistry.

Water samples collected from wells and springs are analyzed for major ions, trace elements, and isotopic signatures. These data are used to identify recharge zones, estimate residence times, and assess vulnerability to contamination from surface activities including agriculture and hydrocarbon extraction.

The intersection of hydrogeochemistry with land use and resource extraction is a particular focus, given the region's history of ranching, farming, and oil and gas development.

Sedimentology

Sedimentology & Depositional Systems

This investigation is new as of August 2026. I am investigating Calcareous Sandstone and the effect other materials may have on the rock. Here are some recent pictures of the lab work and where I am in the process.

Control sample — tumble run lab specimen 080326
Control Sample Tumble Run 080326
Sample A — Mixture A tumble run lab specimen 080326
Sample A Tumble Run 080326
Sample B — tumble run lab specimen 080326
Sample B Tumble Run 080326

Fluvial & Alluvial Systems

Analysis of river channel migration, floodplain sedimentation, and alluvial fan development in arid and semi-arid West Texas environments. Grain size analysis and provenance studies trace sediment source regions and transport pathways.

Stratigraphic Correlation

Subsurface stratigraphic correlation using well logs, core samples, and outcrop data to reconstruct depositional histories. Focus on Permian Basin sequences and their relationship to hydrocarbon and groundwater reservoir quality.

Emerging Research

Microplastics in Hail

Fig. 1 — Conceptual diagram of microplastic entrainment pathways in convective storm systems.

This investigation examines the entrainment of microplastic particles within hailstones collected across Texas storm events. As atmospheric microplastic contamination becomes increasingly documented in precipitation, hailstones offer a unique and underexplored medium for studying how these particles are incorporated into convective storm systems.

Specimens are sectioned and analyzed for microplastic content by type, size, and distribution within the ice matrix. The research investigates whether microplastics serve as ice nucleation sites, how particle concentration varies with hailstone size, and what source regions the embedded particles may indicate.

Findings contribute to a growing body of literature on atmospheric microplastic transport and have implications for understanding contamination pathways in agricultural and water supply systems across the Southern Plains.

SEM image of microplastic fibers in hailstone matrix, 600X magnification, UTSA
SEM — microplastic fibers, 600X
SEM image of microplastic fiber strand in hailstone matrix, 391X magnification, UTSA
SEM — microplastic fiber strand, 391X
SEM microplastics specimen 3
Microplastics specimen 3
SEM microplastics specimen 4
UV042821HA05, Sample 22, Polycarbonate Fragment, Score 718
SEM microplastics specimen 5
Microplastics specimen 5
SEM microplastics specimen 6
UV042821HA22, Sample 5, Polymer Fiber, Score 606
SEM microplastics specimen 7
DR041120HT03, Sample 12, Phenol Fiber, Score 579
SEM microplastics specimen 8
Microplastics specimen 8
SEM microplastics specimen 9
DR041120HR01, Sample 3, Polystyrene Fiber, Score 570
SEM microplastics specimen 10
UV042821HA52, Sample 17, Polycarbonate Fragment, Score 720

Research proposals and curriculum vitae are available upon request. Document links above are placeholders pending final publication.