The chart shows the distribution of publications by all Research.com ranked scientists in the field of Earth Science in 2026. The highlighted bar marks where William J. Ullman sits on this spectrum.
This scientist: 81 publications — 4th percentile
4% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 603 publications or more.
The chart shows the D-index (discipline H-index) distribution of Earth Science scientists ranked by Research.com in 2026. The highlighted bar marks where William J. Ullman sits on this spectrum.
This scientist: 31 D-Index — 4th percentile
4% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 106 D-Index or more.
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:
Ullman's recent publications provide insights into coastal and marine environmental processes. Notable papers include:
Their frequent coauthors reflect collaborations in related fields and include:
Ullman has contributed multiple papers to specific publication venues, such as:
William J. Ullman;Robert C. Aller
Susan A Welch;William J Ullman
William J. Ullman;David L. Kirchman;Susan A. Welch;Philippe Vandevivere
S.A. Welch;W.J. Ullman
P. Vandevivere;S. A. Welch;W. J. Ullman;David L. Kirchman
George W. Luther;Christina Branson. Swartz;William J. Ullman
Robert C. Aller;James E. Mackin;William J. Ullman;Wang Chen-Hou
William J. Ullman;Mark W. Sandstrom
M.J Roadman;J.R Scudlark;J.J Meisinger;W.J Ullman
T. Torgersen;J. Luly;P. De Deckker;M.R. Jones
Robert C. Aller;Josephine Y. Yingst;William J. Ullman
Donald C. Rhoads;Josephine Y. Yingst;William J. Ullman
William J Ullman;Bonnie Chang;Bonnie Chang;Douglas C Miller;John A Madsen
Douglas C. Miller;William J. Ullman
S.A. Welch;S.A. Welch;W.J. Ullman
T. Torgersen;M. R. Jones;A. W. Stephens;D. E. Searle
William J. Ullman;Robert C. Aller
Kyra H. Kim;James W. Heiss;Holly A. Michael;Wei‐Jun Cai
Kenneth D. Collerson;William J. Ullman;T. Torgersen
William J. Ullman;William J. Ullman;Robert C. Aller
W.J. Ullman;R.C. Aller
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