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  1. AGU Members
  2. Colleen Hansel
Member Since 2000
Colleen Hansel
Senior Scientist, Woods Hole Oceanographic Institution
Immediate Past President, Biogeosciences Executive Committee
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Professional Experience
Woods Hole Oceanographic Institution
Senior Scientist
2020 - Present
Woods Hole Oceanographic Institution
Associate Scientist
2012 - 2020
Education
Stanford University
Doctorate
2004
Colleen's AGU Research
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Insights into deep Baltic Sea physical and biogeochemical cycling of nitrogen and oxygen indicated by dissolved gas tracers
MARINE NITROGEN CYCLING ACROSS SCALES AND ENVIRONMENTS IV ORAL
ocean biology and biogeochemistry | 26 february 2026
Understanding Immediate Impacts of Major Baltic Inflow Events on Manganese Cycling
GENERAL TOPICS IN OCEANOGRAPHY II POSTER
ocean sciences | 15 december 2025
Dynamic Coupling of Abiotic and Biotic Oxidation of Manganese in the Baltic Sea
MICROBIAL GEOCHEMISTRY, CHEMICAL GEOBIOLOGY, AND GEOBIOCHEMISTRY: INTEGRATED APPROACHES TO UNDERSTANDING THE WORLD AROUND US I POSTER
biogeosciences | 13 december 2024
Widespread Subsurface Peaks of Superoxide in the Baltic Sea
BIOGEOCHEMICAL CYCLES OF CARBON, OXYGEN, NITROGEN, PHOSPHORUS, SULFUR, AND SILICON IN CONTEMPORARY EARTH SYSTEMS III ORAL
biogeosciences | 13 december 2024
Microbially-mediated biogeochemical cycling during a Major Baltic Inflow Event in the Baltic Sea
BIOGEOCHEMICAL CYCLES OF CARBON, OXYGEN, NITROGEN, PHOSPHORUS, SULFUR, AND SILICON IN CONTEMPORARY EARTH SYSTEMS II POSTER
biogeosciences | 13 december 2024
Bioactive Secondary Metabolite Production by Marine Fungi Associated with Mesophotic and Deep-Sea Marine Sponges
UNDERGRADUATE EARTH, ATMOSPHERIC, OCEAN, AND SPACE SCIENCE RESEARCH AND OUTREACH POSTERS POSTER
education | 09 december 2024
Subsurface Superoxide Spans the Baltic Sea
JOURNAL OF GEOPHYSICAL RESEARCH: OCEANS
06 october 2024
High resolution physical and biogeochemical gradients drive nitrogen cycling in a meromictic coastal pond
EXPLORING MICROBIAL RESPONSES TO DYNAMIC ENVIRONMENTS: INSIGHTS INTO AQUATIC ECOSYSTEMS AND GLOBAL ELEMENT CYCLING I POSTER
physical-biological interactions | 22 february 2024
Volunteer Experience
2025 - 2026
Immediate Past President
Biogeosciences Executive Committee
2023 - 2024
President
Biogeosciences Executive Committee
2023 - 2024
Section President
Council
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Honors & Awards
William S. and Carelyn Y. Reeburgh Lecture
Received December 2019