John T Delaney, PhD
John T. Delaney
Science and Products
Vulnerability assessment and adaptation planning for projected changes in water quality and quantity for protected areas in the upper Midwest Vulnerability assessment and adaptation planning for projected changes in water quality and quantity for protected areas in the upper Midwest
Climate change and the extreme weather associated with it can be a major challenge to natural resource managers charged with the protection, restoration, recovery, and management of wetlands and wildlife habitats. Forecasting the potential impacts of climate changes will be important for decision-makers and land managers seeking to minimize impacts to habitats, infrastructure, and...
Authors
Kristen L. Bouska, John Delaney
Mapping climate change vulnerability of aquatic-riparian ecosystems using decision-relevant indicators Mapping climate change vulnerability of aquatic-riparian ecosystems using decision-relevant indicators
Climate change has and is projected to continue to alter historical regimes of temperature, precipitation, and hydrology. To assess the vulnerability of climate change from a land management perspective and spatially identify where the most extreme changes are anticipated to occur, we worked in collaboration with land managers to develop a climate change vulnerability map for the...
Authors
John Delaney, Kristen L. Bouska, Josh D. Eash, Patricia J. Heglund, Andrew A Allstadt
Eruptive and tectonic history of the Endeavour Segment, Juan de Fuca Ridge, based on AUV mapping data and lava flow ages Eruptive and tectonic history of the Endeavour Segment, Juan de Fuca Ridge, based on AUV mapping data and lava flow ages
High-resolution bathymetric surveys from autonomous underwater vehicles ABE and D. Allan B. were merged to create a coregistered map of 71.7 km2 of the Endeavour Segment of the Juan de Fuca Ridge. Radiocarbon dating of foraminifera in cores from three dives of remotely operated vehicle Doc Ricketts provide minimum eruption ages for 40 lava flows that are combined with the bathymetric...
Authors
David A. Clague, Brian M Dreyer, Jennifer B. Paduan, Julie F Martin, David W Caress, James B. Gillespie, Deborah S Kelley, Hans Thomas, Ryan A Portner, John R. Delaney, Thomas P. Guilderson, Mary L. McGann
Erratum: Geochronology and petrogenesis of MORB from the Juan de Fuca and Gorda ridges by 238U-230Th disequilibrium Erratum: Geochronology and petrogenesis of MORB from the Juan de Fuca and Gorda ridges by 238U-230Th disequilibrium
A highly precise mass spectrometric method of analysis was used to determine238U234U230Th232Th in axial and off-axis basalt glasses from Juan de Fuca (JDF) and Gorda ridges. Initial 230Th activity excesses in the axial samples range from 3 to 38%, but generally lie within a narrow range of 12 to 15%. Secondary alteration effects were evaluated usingδ234U and appear to be negligible...
Authors
S.J. Goldstein, Michael T. Murrell, D.R. Janecky, John R. Delaney, David A. Clague
Science and Products
Vulnerability assessment and adaptation planning for projected changes in water quality and quantity for protected areas in the upper Midwest Vulnerability assessment and adaptation planning for projected changes in water quality and quantity for protected areas in the upper Midwest
Climate change and the extreme weather associated with it can be a major challenge to natural resource managers charged with the protection, restoration, recovery, and management of wetlands and wildlife habitats. Forecasting the potential impacts of climate changes will be important for decision-makers and land managers seeking to minimize impacts to habitats, infrastructure, and...
Authors
Kristen L. Bouska, John Delaney
Mapping climate change vulnerability of aquatic-riparian ecosystems using decision-relevant indicators Mapping climate change vulnerability of aquatic-riparian ecosystems using decision-relevant indicators
Climate change has and is projected to continue to alter historical regimes of temperature, precipitation, and hydrology. To assess the vulnerability of climate change from a land management perspective and spatially identify where the most extreme changes are anticipated to occur, we worked in collaboration with land managers to develop a climate change vulnerability map for the...
Authors
John Delaney, Kristen L. Bouska, Josh D. Eash, Patricia J. Heglund, Andrew A Allstadt
Eruptive and tectonic history of the Endeavour Segment, Juan de Fuca Ridge, based on AUV mapping data and lava flow ages Eruptive and tectonic history of the Endeavour Segment, Juan de Fuca Ridge, based on AUV mapping data and lava flow ages
High-resolution bathymetric surveys from autonomous underwater vehicles ABE and D. Allan B. were merged to create a coregistered map of 71.7 km2 of the Endeavour Segment of the Juan de Fuca Ridge. Radiocarbon dating of foraminifera in cores from three dives of remotely operated vehicle Doc Ricketts provide minimum eruption ages for 40 lava flows that are combined with the bathymetric...
Authors
David A. Clague, Brian M Dreyer, Jennifer B. Paduan, Julie F Martin, David W Caress, James B. Gillespie, Deborah S Kelley, Hans Thomas, Ryan A Portner, John R. Delaney, Thomas P. Guilderson, Mary L. McGann
Erratum: Geochronology and petrogenesis of MORB from the Juan de Fuca and Gorda ridges by 238U-230Th disequilibrium Erratum: Geochronology and petrogenesis of MORB from the Juan de Fuca and Gorda ridges by 238U-230Th disequilibrium
A highly precise mass spectrometric method of analysis was used to determine238U234U230Th232Th in axial and off-axis basalt glasses from Juan de Fuca (JDF) and Gorda ridges. Initial 230Th activity excesses in the axial samples range from 3 to 38%, but generally lie within a narrow range of 12 to 15%. Secondary alteration effects were evaluated usingδ234U and appear to be negligible...
Authors
S.J. Goldstein, Michael T. Murrell, D.R. Janecky, John R. Delaney, David A. Clague