Breadcrumb
Bio
Biogeochemistry, hydrology, and geomorphology
The earth-surface environment and how it changes on human and geologic time scales. My emphasis is on climate and land-use changes and how these affect processes that control the composition and dispersal of dissolved and solid phases in rivers and trace gases in the atmosphere. My work combines both field and theoretical studies using the tools of geology, biology, biogeochemistry, and geography.
Current areas of investigation: (1) Can we develop general physically and biologically based models of the processes that generate the dissolved and particulate load in rivers and trace substances in the atmosphere? (2) How do various phases chemically partition during transport in rivers and estuaries? (3) What are the dispersal pathways of river-borne substances through rivers and estuaries into the coastal environment? (4) How do human activities, particularly land-use change, affect environments being examined? (5) How do we use rivers to integrate phenomena at local spatial scales up to continental scales? (6) Can we formulate provenance models to reconstruct past geologic environments?
Education
- PhD: Massachusetts Institute of Technology - Woods Hole Oceanographic Institute, 1980
Awards
- Meritorious Service Award for "exceptional contributions to the development of new and innovative research programs in the U.S. Geological Survey," Department of the Interior, 2002
Research
Research interests: biogeochemistry, hydrology, and geomorphology.
Publications
Recent publications
Geología, hidrología y suelos / Geology, hydrology, and soils
Type: Chapter
Panorama regional y sitios visitados / Regional panorama and sites visited
Type: Chapter
Atmospheric inputs to watersheds of the Luquillo Mountains in eastern Puerto Rico: Chapter D in <i>Water quality and landscape processes of four watersheds in eastern Puerto Rico</i>
Type: Chapter
Atmospheric inputs to watersheds of the Luquillo Mountains in eastern Puerto Rico—Chapter D
Type: Chapter
Hydrology and climate of four watersheds in eastern Puerto Rico: Chapter C in <i>Water quality and landscape processes of four watersheds in eastern Puerto Rico</i>
Type: Journal Article
Water quality and mass transport in four watersheds in eastern Puerto Rico: Chapter E in <i>Water quality and landscape processes of four watersheds in eastern Puerto Rico</i>
Type: Journal Article
Land use, population dynamics, and land-cover change in eastern Puerto Rico: Chapter B in <i>Water quality and landscape processes of four watersheds in eastern Puerto Rico</i>
Type: Journal Article
Appendix 1—Data processing and computation to characterize hydrology and compare water quality of four watersheds in Puerto Rico
Type: Chapter
Weathering, landscape equilibrium, and carbon in four watersheds in eastern Puerto Rico—Chapter H
Type: Chapter
Water quality and mass transport in four watersheds in eastern Puerto Rico—Chapter E
Type: Chapter
Hydrology and climate of four watersheds in eastern Puerto Rico—Chapter C
Type: Chapter
Physiography, geology, and land cover of four watersheds in eastern Puerto Rico—Chapter A
Type: Chapter
Physiography, geology, and land cover of four watersheds in eastern Puerto Rico: Chapter A in <i>Water quality and landscape processes of four watersheds in eastern Puerto Rico</i>
Type: Journal Article
Weathering, landscape equilibrium, and carbon in four watersheds in eastern Puerto Rico: Chapter H in <i>Water quality and landscape processes of four watersheds in eastern Puerto Rico</i>
Type: Journal Article
Appendix 2—Methods used to analyze water quality of four watersheds in eastern Puerto Rico
Type: Chapter
Water quality and landscape processes of four watersheds in eastern Puerto Rico
Murphy SF; Stallard RF; Contributions by Buss HL; Gould WA; Larsen MC; Liu Z; Martinuzzi S; Pares-Ramos IK; White AF; Zo...
- Murphy SF
- Stallard RF
- Contributions by Buss HL
- Gould WA
- Larsen MC
- Liu Z
- Martinuzzi S
- Pares-Ramos IK
- White AF
- Zou X
Type: Journal Article
Long-term patterns and short-term dynamics of stream solutes and suspended sediment in a rapidly weathering tropical watershed
Publication Date: 2011-07-09
Type: Journal Article
Historical influence of soil and water management on sediment and carbon budgets in the United States
Publication Date: 2011-06-01
Type: Journal Article
Procesos paisajísticos: geología, hidrología y suelos / Landscape processes: geology, hydrology, and soils
Type: Chapter
A Panama Canal Watershed Experiment: The Agua Salud Project
Type: Conference Proceeding
Geology
Type: Chapter
Panama Canal Watershed Experiment: Agua Salud Project
Publication Date: 2010-01-01
Type: Journal Article
Panama Canal Watershed Experiment - Agua Salud Project
Type: Conference Proceeding
Primary factors affecting water quality and quantity in four watersheds in eastern Puerto Rico
Type: Chapter
Geolocation of man-made reservoirs across terrains of varying complexity using GIS
Publication Date: 2008-10-01
Type: Journal Article
Pages
Outreach
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