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Earth Science

D-Index
31
Citations
5619
World Ranking
8842
National Ranking
2866

Overview

William J. Ullman is affiliated with the University of Delaware in the United States and focuses on research within Earth and Planetary Sciences and Environmental Science. Their work spans various subfields including Oceanography, Global and Planetary Change, Geochemistry and Petrology, Environmental Chemistry, and Bioengineering.

The research topics covered by Ullman include:

  • Marine and coastal ecosystems
  • Ocean Acidification Effects and Responses
  • Marine Bivalve and Aquaculture Studies
  • Groundwater and Isotope Geochemistry
  • Methane Hydrates and Related Phenomena
  • Analytical Chemistry and Sensors

Ullman's recent publications provide insights into coastal and marine environmental processes. Notable papers include:

  • "Seasonal and Spatial Production Patterns of Dissolved Inorganic Carbon and Total Alkalinity in a Shallow Beach Aquifer" (2022) published in Frontiers in Marine Science
  • "The ebb and flow of protons: A novel approach for the assessment of estuarine and coastal acidification" (2020) published in Estuarine Coastal and Shelf Science
  • "Understanding the dynamic response of Durafet-based sensors: A case study from the Murderkill Estuary-Delaware Bay system (Delaware, USA)" (2023) published in Estuarine Coastal and Shelf Science
  • "HYDROLOGIC AND GEOLOGIC DRIVERS OF REDOX DYNAMICS, BIOGEOCHEMICAL HOTSPOTS, AND SOLUTE FLUXES IN COASTAL AQUIFERS" (2022) published in Abstracts with programs - Geological Society of America

Their frequent coauthors reflect collaborations in related fields and include:

  • Wei-Jun Cai
  • James W. Heiss
  • Holly A. Michael
  • D. Tye Pettay
  • Stephen F. Gonski

Ullman has contributed multiple papers to specific publication venues, such as:

  • Estuarine Coastal and Shelf Science
  • Frontiers in Marine Science
  • Abstracts with programs - Geological Society of America

Best Publications

  • Diffusion coefficients in nearshore marine sediments1

    William J. Ullman;Robert C. Aller

  • The effect of organic acids on plagioclase dissolution rates and stoichiometry

    Susan A Welch;William J Ullman

  • Laboratory evidence for microbially mediated silicate mineral dissolution in nature

    William J. Ullman;David L. Kirchman;Susan A. Welch;Philippe Vandevivere

  • Feldspar dissolution in acidic and organic solutions: Compositional and pH dependence of dissolution rate

    S.A. Welch;W.J. Ullman

  • Enhanced Dissolution of Silicate Minerals by Bacteria at Near-Neutral pH

    P. Vandevivere;S. A. Welch;W. J. Ullman;David L. Kirchman

  • Direct determination of iodide in seawater by cathodic stripping square wave voltammetry

    George W. Luther;Christina Branson. Swartz;William J. Ullman

  • Early chemical diagenesis, sediment-water solute exchange, and storage of reactive organic matter near the mouth of the Changjiang, East China Sea

    Robert C. Aller;James E. Mackin;William J. Ullman;Wang Chen-Hou

  • Dissolved nutrient fluxes from the nearshore sediments of Bowling Green Bay, central Great Barrier Reef Lagoon (Australia)

    William J. Ullman;Mark W. Sandstrom

  • Validation of Ogawa passive samplers for the determination of gaseous ammonia concentrations in agricultural settings

    M.J Roadman;J.R Scudlark;J.J Meisinger;W.J Ullman

  • Late quaternary environments of the Carpentaria Basin, Australia

    T. Torgersen;J. Luly;P. De Deckker;M.R. Jones

  • Comparative biogeochemistry of water in intertidal Onuphis (polychaeta) and Upogebia (crustacea) burrows: temporal patterns and causes

    Robert C. Aller;Josephine Y. Yingst;William J. Ullman

  • SEAFLOOR STABILITY IN CENTRAL LONG ISLAND SOUND: Part I. Temporal Changes In Erodibility of Fine-Grained Sediment

    Donald C. Rhoads;Josephine Y. Yingst;William J. Ullman

  • Groundwater mixing, nutrient diagenesis, and discharges across a sandy beachface, Cape Henlopen, Delaware (USA)

    William J Ullman;Bonnie Chang;Bonnie Chang;Douglas C Miller;John A Madsen

  • Ecological Consequences of Ground Water Discharge to Delaware Bay, United States

    Douglas C. Miller;William J. Ullman

  • The effect of microbial glucose metabolism on bytownite feldspar dissolution rates between 5 and 35 C

    S.A. Welch;S.A. Welch;W.J. Ullman

  • Late Quaternary hydrological changes in the Gulf of Carpentaria

    T. Torgersen;M. R. Jones;A. W. Stephens;D. E. Searle

  • Dissolved iodine flux from estuarine sediments and implications for the enrichment of iodine at the sediment water interface

    William J. Ullman;Robert C. Aller

  • Spatial Patterns of Groundwater Biogeochemical Reactivity in an Intertidal Beach Aquifer

    Kyra H. Kim;James W. Heiss;Holly A. Michael;Wei‐Jun Cai

  • Ground waters with unradiogenic 87Sr/86Sr ratios in the Great Artesian Basin, Australia

    Kenneth D. Collerson;William J. Ullman;T. Torgersen

  • The geochemistry of iodine in near-shore carbonate sediments

    William J. Ullman;William J. Ullman;Robert C. Aller

  • Rates of iodine remineralization in terrigenous near-shore sediments

    W.J. Ullman;R.C. Aller

Frequent Co-Authors

Holly A. Michael
Holly A. Michael University of Delaware
Robert C. Aller
Robert C. Aller Stony Brook University
George W. Luther
George W. Luther University of Delaware
Wei-Jun Cai
Wei-Jun Cai University of Delaware
Jack A. Puleo
Jack A. Puleo University of Delaware
Andrew L. Herczeg
Andrew L. Herczeg Flinders University
David L. Kirchman
David L. Kirchman University of Delaware
Vincent E. A. Post
Vincent E. A. Post Federal Institute for Geosciences and Natural Resources
Allan R. Chivas
Allan R. Chivas University of Wollongong
Jack J. Middelburg
Jack J. Middelburg Utrecht University

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