Paul R Sheppard
Biographic Data
| ID | 5657357 |
|---|---|
| NAME | Paul R Sheppard |
| GIVEN NAMES | Paul R |
| FAMILY NAME | Sheppard |
| SIGNATURE | SHEPPARD P R |
| AFFILIATIONS | University of Arizona |
| ORCID | 0000-0001-5779-7215 |
| VERIFIED | Yes |
| TOTAL WORKS | 9 |
| TOTAL CITATIONS | 9 |
| AUTHOR COUNT | 9 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1996 |
| LATEST PUBLICATION YEAR | 2024 |
| H-INDEX | 2 |
In Memoriam Charles Wayne Stockton 1938–2023
Paul C. Van Deusen 1953–2015
This item is part of the Tree-Ring Research (formerly Tree-Ring Bulletin) archive. For more information about this peer-reviewed scholarly journal, please email the Editor of Tree-Ring Research at [email protected].
The First Millennium-Age Araucaria Araucana in Patagonia
This item is part of the Tree-Ring Research (formerly Tree-Ring Bulletin) archive. For more information about this peer-reviewed scholarly journal, please email the Editor of Tree-Ring Research at [email protected].
Dendroclimatology
The scientific discipline called dendrochronology is the study of tree rings and of environmental conditions and events of the past that tree growth can reflect. The beginning of scientific study of tree rings is generally ascribed to an astronomer named Andrew Ellicott Douglass, who in the early 1900s noticed not only variation in tree‐ring width but also that this variability was similar between multiple trees. Dendrochronology subsequently exp…
Multiple Dendrochronological Signals Indicate the Eruption of ParíCutin Volcano, Michoacán, Mexico
The eruption of Parícutin (1943–1952), a cinder cone volcano in Michoacán, Mexico, caused dendrochronological and dendrochemical responses that might be useful as general dating tools for eruptions. For the eruption period, pines near Parícutin have slightly suppressed ring widths plus high inter-annual variability of width. Wood anatomy changes include traumatic resin ducts and thin bands of false latewood. Dendrochemistry of tree rings shows li…
A 700-year history of groundwater recharge in the drylands of NW China
A 700-year semi-quantitative history of diffuse groundwater recharge in the Badain Jaran Desert (Inner Mongolia) is proposed on the basis of solute data from multiple unsaturated zone groundwater profiles using mass balance of chloride to establish recharge rates and profile chronologies. Four relatively humid (1330—1430, 1500—1620, 1700—1780 and 1950—1990) and three relatively arid phases (1430—1500, 1620—1700 and 1900—1950) are discernable acro…
Laser Trimming Tree-Ring Cores for Dendrochemistry of Metals
This article discusses the application of laser to trim the outer surface from tree-ring increment cores in preparation for dendrochemistry of certain metals. A source of contamination specific to dendrochemistry of metals is metal constituents, such as iron, tungsten, chromium, nickel, and cobalt, coming off tools used to collect and process cores and adhering to the sample surface. One method to eliminate this contamination is to trim off the o…
A dendroarchaeological re-examination of the “Messiah” violin and other instruments attributed to Antonio Stradivari
Reflected-light image analysis of conifer tree rings for reconstructing climate
We use reflected-light image analysis to measure brightness of conifer rings, and we use brightness as an alternative to density for reconstructing climate. Using densitometry and image analysis, we measured cores from red spruce ( Picea rubens Sarg.) growing at Elephant Mountain, Maine, and then compared statistical characteristics of density and brightness and climate-tree growth models using density or brightness. Auto- correlational and cross…
A dendroarchaeological re-examination of the “Messiah” violin and other instruments attributed to Antonio Stradivari
Reflected-light image analysis of conifer tree rings for reconstructing climate
We use reflected-light image analysis to measure brightness of conifer rings, and we use brightness as an alternative to density for reconstructing climate. Using densitometry and image analysis, we measured cores from red spruce ( Picea rubens Sarg.) growing at Elephant Mountain, Maine, and then compared statistical characteristics of density and brightness and climate-tree growth models using density or brightness. Auto- correlational and cross…
Dendroclimatology
The scientific discipline called dendrochronology is the study of tree rings and of environmental conditions and events of the past that tree growth can reflect. The beginning of scientific study of tree rings is generally ascribed to an astronomer named Andrew Ellicott Douglass, who in the early 1900s noticed not only variation in tree‐ring width but also that this variability was similar between multiple trees. Dendrochronology subsequently exp…
Reflected-light image analysis of conifer tree rings for reconstructing climate
We use reflected-light image analysis to measure brightness of conifer rings, and we use brightness as an alternative to density for reconstructing climate. Using densitometry and image analysis, we measured cores from red spruce ( Picea rubens Sarg.) growing at Elephant Mountain, Maine, and then compared statistical characteristics of density and brightness and climate-tree growth models using density or brightness. Auto- correlational and cross…
A dendroarchaeological re-examination of the “Messiah” violin and other instruments attributed to Antonio Stradivari
Laser Trimming Tree-Ring Cores for Dendrochemistry of Metals
This article discusses the application of laser to trim the outer surface from tree-ring increment cores in preparation for dendrochemistry of certain metals. A source of contamination specific to dendrochemistry of metals is metal constituents, such as iron, tungsten, chromium, nickel, and cobalt, coming off tools used to collect and process cores and adhering to the sample surface. One method to eliminate this contamination is to trim off the o…
Multiple Dendrochronological Signals Indicate the Eruption of ParíCutin Volcano, Michoacán, Mexico
The eruption of Parícutin (1943–1952), a cinder cone volcano in Michoacán, Mexico, caused dendrochronological and dendrochemical responses that might be useful as general dating tools for eruptions. For the eruption period, pines near Parícutin have slightly suppressed ring widths plus high inter-annual variability of width. Wood anatomy changes include traumatic resin ducts and thin bands of false latewood. Dendrochemistry of tree rings shows li…
A 700-year history of groundwater recharge in the drylands of NW China
A 700-year semi-quantitative history of diffuse groundwater recharge in the Badain Jaran Desert (Inner Mongolia) is proposed on the basis of solute data from multiple unsaturated zone groundwater profiles using mass balance of chloride to establish recharge rates and profile chronologies. Four relatively humid (1330—1430, 1500—1620, 1700—1780 and 1950—1990) and three relatively arid phases (1430—1500, 1620—1700 and 1900—1950) are discernable acro…
Dendroclimatology
The scientific discipline called dendrochronology is the study of tree rings and of environmental conditions and events of the past that tree growth can reflect. The beginning of scientific study of tree rings is generally ascribed to an astronomer named Andrew Ellicott Douglass, who in the early 1900s noticed not only variation in tree‐ring width but also that this variability was similar between multiple trees. Dendrochronology subsequently exp…
Paul C. Van Deusen 1953–2015
This item is part of the Tree-Ring Research (formerly Tree-Ring Bulletin) archive. For more information about this peer-reviewed scholarly journal, please email the Editor of Tree-Ring Research at [email protected].
The First Millennium-Age Araucaria Araucana in Patagonia
This item is part of the Tree-Ring Research (formerly Tree-Ring Bulletin) archive. For more information about this peer-reviewed scholarly journal, please email the Editor of Tree-Ring Research at [email protected].
In Memoriam Charles Wayne Stockton 1938–2023
Tree-ring climate responses (7 works) · Geography (6 works) · Physical geography (4 works) · Plant Water Relations and Carbon Dynamics (4 works) · Archaeology (3 works) · Climatology (3 works) · Dendrochronology (3 works) · Environmental Science (3 works) · Geology (3 works) · History (2 works)