Michael E. Ketterer
YOU?
Author Swipe
View article: Scattering from the charge radius of a neutral particle
Scattering from the charge radius of a neutral particle Open
In the physics curriculum, students normally learn about Rutherford scattering from charged particles in classical mechanics, quantum mechanics, and quantum field theory. This paper provides a pedagogical introduction to the problem of sca…
View article: Geographic determination of Pinus ponderosa using DART TOFMS, ICP-MS, and LIBS handheld analyzer
Geographic determination of Pinus ponderosa using DART TOFMS, ICP-MS, and LIBS handheld analyzer Open
Due to legal requirements on international imports, it is important for law enforcement and regulatory agencies to identify the geographical provenance of timber. Current methods for geographic identification utilize data generated by dire…
View article: Geographic determination data for southern Oregon Pinus ponderosa using DART TOFMS, ICP-MS, and LIBS handheld analyzer
Geographic determination data for southern Oregon Pinus ponderosa using DART TOFMS, ICP-MS, and LIBS handheld analyzer Open
This data publication contains analytical data from direct analysis in real time time-of-flight mass spectrometry (DART TOFMS), inductively coupled plasma mass spectrometry (ICP-MS), and handheld laser-induced breakdown spectroscopy (LIBS)…
View article: Assessing decadal soil redistribution rates using <sup>239+240</sup> Pu across diverse lithologies in Southeast Alaska
Assessing decadal soil redistribution rates using <sup>239+240</sup> Pu across diverse lithologies in Southeast Alaska Open
Quantifying soil redistribution rates, including both erosion and deposition, is critical for understanding erosion processes, landscape evolution, land management strategies, and the carbon cycle. In the Northeast Pacific coastal temperat…
View article: Soil weathering dynamics and erosion in a dry oceanic area of the southern hemisphere (Otago, New Zealand)
Soil weathering dynamics and erosion in a dry oceanic area of the southern hemisphere (Otago, New Zealand) Open
Landscape evolution is driven by tectonics, climate and surface denudation. In New Zealand, tectonics and steep climatic gradients cause a dynamic landscape with intense chemical weathering, rapid soil formation, and high soil losses. In t…
View article: Contrasting soil dynamics in the Serra da Estrela mountain plateau &#8211; &#160;Portugal
Contrasting soil dynamics in the Serra da Estrela mountain plateau –  Portugal Open
<p>Limited data are available on how soil erosion rates compare between surfaces of different ages because short-term processes often overprint the longer-term erosion signal. This study investigated the soil dynamics among a formerl…
View article: Contrasting soil dynamics in a formerly glaciated and non-glaciated Mediterranean mountain plateau (Serra da Estrela, Portugal)
Contrasting soil dynamics in a formerly glaciated and non-glaciated Mediterranean mountain plateau (Serra da Estrela, Portugal) Open
Few data are available on how soil erosion rates compare between surfaces of different ages because short-term processes often overprint the longer-term erosion signal. This study investigated the soil dynamics among two end-member sites, …
View article: Fallout radionuclides indicate a 10% loss of European topsoil in 50 years
Fallout radionuclides indicate a 10% loss of European topsoil in 50 years Open
<p>Quantifying soil erosion is a major research challenge due to erosion's episodic character and spatial variation. Fallout radionuclides as <sup>239+240</sup>Pu and <sup>137</sup>Cs are powerful tools to ass…
View article: Assessing soil redistribution of forest and cropland sites in wet tropical Africa using <sup>239+240</sup> Pu fallout radionuclides
Assessing soil redistribution of forest and cropland sites in wet tropical Africa using <sup>239+240</sup> Pu fallout radionuclides Open
Due to the rapidly growing population in tropical Africa, a substantial rise in food demand is predicted in upcoming decades, which will result in higher pressure on soil resources. However, there is limited knowledge on soil redistributio…
View article: Records of Enriched Uranium Atmospheric Deposition in Pond Sediments in Piketon, OH
Records of Enriched Uranium Atmospheric Deposition in Pond Sediments in Piketon, OH Open
The enrichment of uranium, often for nuclear weapons programs and commercial nuclear reactors, produces higher concentrations of radioactive uranium 235 (235U) than what naturally occurs, which can pose a human health hazard. The most abun…
View article: Quantification of soil erosion (using 239+240Pu) on periglacial chronosequences reveals the importance of vegetation cover in soil stabilisation
Quantification of soil erosion (using 239+240Pu) on periglacial chronosequences reveals the importance of vegetation cover in soil stabilisation Open
<p>High mountainous areas are are strongly shaped by redistribution processes of sediments and soils. Due to the projected climate warming and the continued retreat of glaciers in the 21<sup>st</sup> century, we can expec…
View article: Assessing soil erosion of forest and cropland sites in wet tropicalAfrica using <sup>239+240</sup> Pu fallout radionuclides
Assessing soil erosion of forest and cropland sites in wet tropicalAfrica using <sup>239+240</sup> Pu fallout radionuclides Open
Due to the rapidly growing population in tropical Africa, a substantial rise in food demand is predicted in upcoming decades, which will result in higher pressure on soil resources. However, there is limited knowledge on soil redistributio…
View article: Understanding the role of water and tillage erosion from <sup>239+240</sup> Pu tracer measurements using inverse modelling
Understanding the role of water and tillage erosion from <sup>239+240</sup> Pu tracer measurements using inverse modelling Open
Soil redistribution on arable land is a major threat for a sustainable use of soil resources. The majority of soil redistribution studies focus on water erosion, while wind and tillage erosion also induce pronounced redistribution of soil …
View article: Understanding the role of water and tillage erosion from <sup>239+240</sup> Pu tracer measurements using inverse modelling
Understanding the role of water and tillage erosion from <sup>239+240</sup> Pu tracer measurements using inverse modelling Open
Soil redistribution on arable land is a major threat for a sustainable use of soil resources. The soil redistribution process most studies focus on is water erosion, while wind and tillage erosion also induce pronounced redistribution of s…
View article: Surface denudation and soil erosion over 300 ka at the Otago upland (New Zealand) using 10Be and 239+240Pu
Surface denudation and soil erosion over 300 ka at the Otago upland (New Zealand) using 10Be and 239+240Pu Open
<p>The Tor Exhumation Approach (TEA) traditionally uses large residual granitic landforms as indicators for surface lowering over time of their surrounding landscape. This study challenged the broad applicability of this approach by …
View article: Erosion of archaeological sites: Quantifying the threat using optically stimulated luminescence and fallout isotopes
Erosion of archaeological sites: Quantifying the threat using optically stimulated luminescence and fallout isotopes Open
Although visible evidence shows that erosion has damaged many archaeological sites, especially when tilled, there has hitherto been scant attention to its quantitative assessment. Accordingly, the archaeology communities lack insight into …
View article: Denudation variability of the <scp>S</scp>ila <scp>M</scp>assif upland (<scp>I</scp>taly) from decades to millennia using <scp><sup>10</sup>Be</scp> and <sup>239+240</sup><scp>Pu</scp>
Denudation variability of the <span>S</span>ila <span>M</span>assif upland (<span>I</span>taly) from decades to millennia using <span><sup>10</sup>Be</span> and <sup>239+240</sup><span>Pu</span> Open
Landscapes and soils evolve in non‐linear ways over millennia. Current knowledge is incomplete as only average denudation (or erosion) rates are normally estimated, neglecting the temporal discontinuities of these processes. The determinat…
View article: Heavy Metals Monitoring in Sediments from Lerma River in West-Central Mexico
Heavy Metals Monitoring in Sediments from Lerma River in West-Central Mexico Open
The aim of this work was to carry out monitoring of some elements considered toxic in sediments from Lerma River. An analytical method was optimized in our laboratory for quantification of nickel (Ni), cobalt (Co), manganese (Mn), arsenic …
View article: Decision support for the selection of reference sites using <sup>137</sup> Cs as a soil erosion tracer
Decision support for the selection of reference sites using <sup>137</sup> Cs as a soil erosion tracer Open
The classical approach of using 137Cs as a soil erosion tracer is based on the comparison between stable reference sites and sites affected by soil redistribution processes; it enables the derivation of soil erosion and deposition rates. T…
View article: 239+240 Pu from “contaminant” to soil erosion tracer: Where do we stand?
239+240 Pu from “contaminant” to soil erosion tracer: Where do we stand? Open
As soil erosion is the major threat to one of the most essential resources of humankind, methods to quantify soil redistribution are crucial for agro-environmental assessment as well as for optimisation of soil conservation practices. The …
View article: Baseline Caesium-137 and Plutonium-239+240 inventory assessment for Central Europe
Baseline Caesium-137 and Plutonium-239+240 inventory assessment for Central Europe Open
International audience
View article: Elemental allelopathy by an arsenic hyperaccumulating fern, Pteris vittata L.
Elemental allelopathy by an arsenic hyperaccumulating fern, Pteris vittata L. Open
The functional advantages of arsenic (As) hyperaccumulation by plants are poorly understood. One proposed benefit, termed elemental allelopathy, occurs when hyperaccumulated As is cycled from the plant back into the top layer of soil, allo…
View article: Decision support for the selection of reference sites using <sup>137</sup> Cs as soil erosion tracer
Decision support for the selection of reference sites using <sup>137</sup> Cs as soil erosion tracer Open
The classical approach to use 137Cs as soil erosion tracer is based on the comparison between stable reference sites and sites affected by soil redistribution processes, and enables to derive soil erosion and deposition rates. The method i…
View article: A multi-radionuclide approach to evaluate the suitability of 239+240Pu as soil erosion tracer
A multi-radionuclide approach to evaluate the suitability of 239+240Pu as soil erosion tracer Open
FIGURES 19–24. Midoria lamellata sp. nov. 19. Aedeagus, connective and paramere, ventral view; 20. Aedeagus, connective and paramere, dorsal view; 21. Aedeagus, connective and paramere, side view; 22. Pygofer, ventral view; 23. Forewing; 2…