Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Microplastics (20)
- Climate change (15)
- Chemical (11)
- Environmental Monitoring (11)
- Metals (11)
-
- Water Pollutants (11)
- Agriculture (8)
- Lead (8)
- Sea ice (8)
- Accumulation (7)
- Fibres (7)
- Humans (7)
- Adsorption (6)
- Biogeochemistry (6)
- Heavy metals (6)
- International Ocean Discovery Program (6)
- Land degradation (6)
- Rivers (6)
- Seawater (6)
- Trace metals (6)
- XRF (6)
- Arctic (5)
- Community resilience (5)
- Expedition 399 (5)
- Fragments (5)
- Holocene (5)
- IODP (5)
- Microfibres (5)
- Modelling (5)
- Plastics (5)
- Publication Year
- File Type
Articles 691 - 720 of 1483
Full-Text Articles in Entire DC Network
Deviation Between Projected And Observed Precipitation Trends Greater With Altitude, T. R. Murphy, M. E. Hanley, J. S. Ellis, P. H. Lunt
Deviation Between Projected And Observed Precipitation Trends Greater With Altitude, T. R. Murphy, M. E. Hanley, J. S. Ellis, P. H. Lunt
School of Geography, Earth and Environmental Sciences
No abstract provided.
Biochar Incorporation Increased Nitrogen And Carbon Retention In A Waste-Derived Soil, H. Kate Schofield, T. R. Pettitt, Alan D. Tappin, Gavyn K. Rollinson, Mark F. Fitzsimons
Biochar Incorporation Increased Nitrogen And Carbon Retention In A Waste-Derived Soil, H. Kate Schofield, T. R. Pettitt, Alan D. Tappin, Gavyn K. Rollinson, Mark F. Fitzsimons
School of Geography, Earth and Environmental Sciences
No abstract provided.
Making Geoscience Fieldwork Inclusive And Accessible For Students With Disabilities, Alison Stokes, Anthony D. Feig, Christopher L. Atchison, Brett Gilley
Making Geoscience Fieldwork Inclusive And Accessible For Students With Disabilities, Alison Stokes, Anthony D. Feig, Christopher L. Atchison, Brett Gilley
School of Geography, Earth and Environmental Sciences
No abstract provided.
National Climate-Mitigation Policy: The Spatial Framing Of (In)Justice Claims, Ian Bailey
National Climate-Mitigation Policy: The Spatial Framing Of (In)Justice Claims, Ian Bailey
School of Geography, Earth and Environmental Sciences
No abstract provided.
Transport And Redistribution Of Radiocesium In Fukushima Fallout Through Rivers, Keisuke Taniguchi, Yuichi Onda, Hugh G. Smith, William Blake, Kazuya Yoshimura, Yosuke Yamashiki, Takayuki Kuramoto, Kimiaki Saito
Transport And Redistribution Of Radiocesium In Fukushima Fallout Through Rivers, Keisuke Taniguchi, Yuichi Onda, Hugh G. Smith, William Blake, Kazuya Yoshimura, Yosuke Yamashiki, Takayuki Kuramoto, Kimiaki Saito
School of Geography, Earth and Environmental Sciences
No abstract provided.
Characterization Of The Nairobi River Catchment Impact Zone And Occurrence Of Pharmaceuticals: Implications For An Impact Zone Inclusive Environmental Risk Assessment, Simone Bagnis, Alistair Boxall, Antony Gachanja, Mark Fitzsimons, Martin Murigi, Jason Snape, Alan Tappin, John Wilkinson, Sean Comber
Characterization Of The Nairobi River Catchment Impact Zone And Occurrence Of Pharmaceuticals: Implications For An Impact Zone Inclusive Environmental Risk Assessment, Simone Bagnis, Alistair Boxall, Antony Gachanja, Mark Fitzsimons, Martin Murigi, Jason Snape, Alan Tappin, John Wilkinson, Sean Comber
School of Geography, Earth and Environmental Sciences
No abstract provided.
A Shallow Earthquake Swarm Close To Hydrocarbon Activities: Discriminating Between Natural And Induced Causes For The 2018–2019 Surrey, United Kingdom, Earthquake Sequence, Stephen P. Hicks, James Verdon, Brian Baptie, Richard Luckett, Zoë K. Mildon, Thomas Gernon
A Shallow Earthquake Swarm Close To Hydrocarbon Activities: Discriminating Between Natural And Induced Causes For The 2018–2019 Surrey, United Kingdom, Earthquake Sequence, Stephen P. Hicks, James Verdon, Brian Baptie, Richard Luckett, Zoë K. Mildon, Thomas Gernon
School of Geography, Earth and Environmental Sciences
Earthquakes induced by subsurface industrial activities are a globally emotive issue, with a growing catalog of induced earthquake sequences. However, attempts at discriminating between natural and induced causes, particularly for anomalously shallow seismicity, can be challenging. An earthquake swarm during 2018–2019 in southeast England with a maximum magnitude of ML 3.2 received great public and media attention because of its proximity to operating oilfields. It is therefore vital and timely to provide a detailed characterization of the earthquake sequence at present, and to decide based on current evidence, whether the earthquakes were likely natural or induced. We detected 168 low-magnitude …
The Interplay Between Regeneration And Scavenging Fluxes Drives Ocean Iron Cycling, Alessandro Tagliabue, Andrew R. Bowie, Timothy Devries, Michael J. Ellwood, William M. Landing, Angela Milne, Daniel C. Ohnemus, Benjamin S. Twining, Philip W. Boyd
The Interplay Between Regeneration And Scavenging Fluxes Drives Ocean Iron Cycling, Alessandro Tagliabue, Andrew R. Bowie, Timothy Devries, Michael J. Ellwood, William M. Landing, Angela Milne, Daniel C. Ohnemus, Benjamin S. Twining, Philip W. Boyd
School of Geography, Earth and Environmental Sciences
No abstract provided.
“We Will Change Whether We Want It Or Not”: Soil Erosion In Maasai Land As A Social Dilemma And A Challenge To Community Resilience, Anna Rabinovich, Claire Kelly, Geoff Wilson, Mona Nasseri, Issakwisa Ngondya, Aloyce Patrick, William H. Blake, Kelvin Mtei, Linus Munishi, Patrick Ndakidemi
“We Will Change Whether We Want It Or Not”: Soil Erosion In Maasai Land As A Social Dilemma And A Challenge To Community Resilience, Anna Rabinovich, Claire Kelly, Geoff Wilson, Mona Nasseri, Issakwisa Ngondya, Aloyce Patrick, William H. Blake, Kelvin Mtei, Linus Munishi, Patrick Ndakidemi
School of Geography, Earth and Environmental Sciences
Soil erosion is a major environmental challenge that undermines economic development in many regions of the world. While much previous work explored physical processes behind this problem, less attention has been paid to social, cultural, and psychological parameters that make a significant impact on soil erosion through the land use practices that they support. The present paper addresses this gap by conducting a qualitative exploration of agro-pastoralist stakeholders' experiences of soil erosion in northern Tanzania, using the community resilience framework and the social dilemmas approach as theoretical lenses. Interview data suggests that the factors that make communities vulnerable to soil …
Brachiopod Shell Thickness Links Environment And Evolution, U Balthasar, J Jin, L Hints, M Cusack
Brachiopod Shell Thickness Links Environment And Evolution, U Balthasar, J Jin, L Hints, M Cusack
School of Geography, Earth and Environmental Sciences
While it is well established that the shapes and sizes of shells are strongly phylogenetically controlled, little is known about the phylogenetic constraints on shell thickness. Yet, shell thickness is likely to be sensitive to environmental fluctuations and has the potential to illuminate environmental perturbations through deep time. Here we systematically quantify the thickness of the anterior brachiopod shell which protects the filtration chamber and is thus considered functionally homologous across higher taxa of brachiopods. Our data comes from 66 genera and ten different orders and shows well-defined upper and lower boundaries of anterior shell thickness. For Ordovician and Silurian …
Using Microlites To Gain Insights Into Ascent Conditions Of Differing Styles Of Volcanism At Soufrière Hills Volcano, Arran P. Murch, Paul D. Cole
Using Microlites To Gain Insights Into Ascent Conditions Of Differing Styles Of Volcanism At Soufrière Hills Volcano, Arran P. Murch, Paul D. Cole
School of Geography, Earth and Environmental Sciences
No abstract provided.
Abrupt Shifts Of Productivity And Sea Ice Regimes At The Western Barents Sea Slope From The Last Glacial Maximum To The Bølling-Allerød Interstadial, Denizcan Köseoğlu, Simon T. Belt, Jochen Knies
Abrupt Shifts Of Productivity And Sea Ice Regimes At The Western Barents Sea Slope From The Last Glacial Maximum To The Bølling-Allerød Interstadial, Denizcan Köseoğlu, Simon T. Belt, Jochen Knies
School of Geography, Earth and Environmental Sciences
No abstract provided.
Transient High Strain Rate During Localized Viscous Creep In The Dry Lower Continental Crust (Lofoten, Norway), Lr Campbell, L Menegon
Transient High Strain Rate During Localized Viscous Creep In The Dry Lower Continental Crust (Lofoten, Norway), Lr Campbell, L Menegon
School of Geography, Earth and Environmental Sciences
Understanding the ability of the lower crust to support transient changes in stresses and strain rates during the earthquake cycle requires a detailed investigation of the deformation mechanisms and rheology of deep crustal fault rocks. Here, we show that lower crustal pseudotachylyte-bearing shear zones are able to accommodate short-term episodes of high strain rate and high stress deformation by accelerated viscous creep, followed by a reduction in stresses to some ambient deformation condition. Quartz microstructure within pseudotachylyte-bearing shear zones in otherwise undeformed granulites from Lofoten, Norway, indicates that dynamic recrystallization occurred during viscous creep under rapid strain rates and high …
Elemental Mobilities: Atmospheres, Matter And Cycling Amid The Weather-World, Paul Simpson
Elemental Mobilities: Atmospheres, Matter And Cycling Amid The Weather-World, Paul Simpson
School of Geography, Earth and Environmental Sciences
No abstract provided.
Use Of Compound Specific Δ13c Stable Isotope Analysis For Intact Triacylglcerides Using High Temperature Gas Chromatography Up To 430°C., P Sutton, M Tuthorn, J Newton
Use Of Compound Specific Δ13c Stable Isotope Analysis For Intact Triacylglcerides Using High Temperature Gas Chromatography Up To 430°C., P Sutton, M Tuthorn, J Newton
School of Geography, Earth and Environmental Sciences
No abstract provided.
A Novel Biomarker-Based Proxy For The Spring Phytoplankton Bloom In Arctic And Sub-Arctic Settings – Hbi T25, Simon T. Belt, L. Smik, Denizcan Köseoğlu, Jochen Knies, Katrine Husum
A Novel Biomarker-Based Proxy For The Spring Phytoplankton Bloom In Arctic And Sub-Arctic Settings – Hbi T25, Simon T. Belt, L. Smik, Denizcan Köseoğlu, Jochen Knies, Katrine Husum
School of Geography, Earth and Environmental Sciences
No abstract provided.
Temporal Evolution Of Ip25 And Other Highly Branched Isoprenoid Lipids In Sea Ice And The Underlying Water Column During An Arctic Melting Season, Rémi Amiraux, Lukas Smik, Denizcan Köseoğlu, Jean François Rontani, Virginie Galindo, Pierre Luc Grondin, Marcel Babin, Simon T. Belt
Temporal Evolution Of Ip25 And Other Highly Branched Isoprenoid Lipids In Sea Ice And The Underlying Water Column During An Arctic Melting Season, Rémi Amiraux, Lukas Smik, Denizcan Köseoğlu, Jean François Rontani, Virginie Galindo, Pierre Luc Grondin, Marcel Babin, Simon T. Belt
School of Geography, Earth and Environmental Sciences
No abstract provided.
A Spatial And Temporal Risk Assessment Of The Impacts Of El Niño On The Tropical Forest Carbon Cycle: Theoretical Framework, Scenarios, And Implications, Adriane Esquivel-Muelbert, Amy C. Bennett, Martin J.P. Sullivan, Jessica C.A. Baker, Yoni Gavish, Michelle O. Johnson, Yunxia Wang, Alexander Chambers-Ostler, Marta Lisli Giannichi, Luciene Gomes, Michelle Kalamandeen, Kanhu Charan Pattnayak, Sophie Fauset
A Spatial And Temporal Risk Assessment Of The Impacts Of El Niño On The Tropical Forest Carbon Cycle: Theoretical Framework, Scenarios, And Implications, Adriane Esquivel-Muelbert, Amy C. Bennett, Martin J.P. Sullivan, Jessica C.A. Baker, Yoni Gavish, Michelle O. Johnson, Yunxia Wang, Alexander Chambers-Ostler, Marta Lisli Giannichi, Luciene Gomes, Michelle Kalamandeen, Kanhu Charan Pattnayak, Sophie Fauset
School of Geography, Earth and Environmental Sciences
Strong El Niño events alter tropical climates and may lead to a negative carbon balance in tropical forests and consequently a disruption to the global carbon cycle. The complexity of tropical forests and the lack of data from these regions hamper the assessment of the spatial distribution of El Niño impacts on these ecosystems. Typically, maps of climate anomaly are used to detect areas of greater risk, ignoring baseline climate conditions and forest cover. Here, we integrated climate anomalies from the 1982–1983, 1997–1998, and 2015–2016 El Niño events with baseline climate and forest edge extent, using a risk assessment approach …
A New Method For Assessing River Ecosystem Services And Its Application To Rivers In Scotland With And Without Nature Conservation Designations., Victoria Keele, David Gilvear, Andrew Large, Angus Tree, Philip Boon
A New Method For Assessing River Ecosystem Services And Its Application To Rivers In Scotland With And Without Nature Conservation Designations., Victoria Keele, David Gilvear, Andrew Large, Angus Tree, Philip Boon
School of Geography, Earth and Environmental Sciences
Based on a paired analysis, we describe a method for evaluating the potential of rivers with different physical characteristics to provide ecosystem services. Scores based on an extensive scientific literature review and expert opinion were applied to four sets of rivers in Scotland, with each pair comprising one river with a statutory nature conservation designation and one where such designations were largely absent. Data on physical habitat features and land cover were extracted manually from Google Earth™, based upon a previously published method expanded here to take account of cultural ecosystem services. Twenty physical habitat features and land-cover types and …
A New Method For Assessing River Ecosystem Services And Its Application To Rivers In Scotland With And Without Nature Conservation Designations., David Gilvear, Victoria Keele, T Angus, Philip Boon, Andrew Large
A New Method For Assessing River Ecosystem Services And Its Application To Rivers In Scotland With And Without Nature Conservation Designations., David Gilvear, Victoria Keele, T Angus, Philip Boon, Andrew Large
School of Geography, Earth and Environmental Sciences
Based on a paired analysis, we describe a method for evaluating the potential of rivers with different physical characteristics to provide ecosystem services. Scores based on an extensive scientific literature review and expert opinion were applied to four sets of rivers in Scotland, with each pair comprising one river with a statutory nature conservation designation and one where such designations were largely absent. Data on physical habitat features and land cover were extracted manually from Google Earth™, based upon a previously published method expanded here to take account of cultural ecosystem services. Twenty physical habitat features and land-cover types and …
Archaeological Assessment Reveals Earth’S Early Transformation Through Land Use, Lucas Stephens, D Fuller, Nicole Boivin, Torben Rick, Nicolas Gauthier, Andrea Kay, Ben Marwick, Chelsey Geralda Denise Armstrong, C. Michael Barton, Tim Denham, Kristina Douglass, Jonathan Driver, Lisa Janz, Patrick Roberts, J. Daniel Rogers, Heather Thakar, Mark Altaweel, Amber L. Johnson, Vattuone Mm Sampietro, Mark Aldenderfer, Sonia Archila, Gilberto Artioli, Martin T. Bale, Timothy Beach, Ferran Borrell, Todd Braje, Philip I. Buckland, Cano Ng Jiménez, José M. Capriles, Castillo A Diez, Ç Çilingiroğlu, Cleary M Negus, James Conolly, Peter R. Coutros, R. Alan Covey, Mauro Cremaschi, Alison Crowther, Lindsay Der, Lernia S Di, John F. Doershuk, William E. Doolittle, Kevin J. Edwards, Jon M. Erlandson, Damian Evans, Andrew Fairbairn, Patrick Faulkner, Gary Feinman, Ricardo Fernandes, Scott M. Fitzpatrick, Ralph Fyfe, E Garcea, S Goldstein, Rc Goodman, Guedes J Dalpoim, J Herrmann, P Hiscock, P Hommel, Ka Horsburgh, C Hritz, Jw Ives, A Junno, Jg Kahn, B Kaufman, C Kearns, Tr Kidder, F Lanoë, D Lawrence, G-A Lee, Mj Levin, Hb Lindskoug, Ja López-Sáez, S Macrae, R Marchant, Jm Marston, S Mcclure, Md Mccoy, Av Miller, M Morrison, Matuzeviciute G Motuzaite, J Müller, A Nayak, S Noerwidi, Tm Peres, Ce Peterson, L Proctor
Archaeological Assessment Reveals Earth’S Early Transformation Through Land Use, Lucas Stephens, D Fuller, Nicole Boivin, Torben Rick, Nicolas Gauthier, Andrea Kay, Ben Marwick, Chelsey Geralda Denise Armstrong, C. Michael Barton, Tim Denham, Kristina Douglass, Jonathan Driver, Lisa Janz, Patrick Roberts, J. Daniel Rogers, Heather Thakar, Mark Altaweel, Amber L. Johnson, Vattuone Mm Sampietro, Mark Aldenderfer, Sonia Archila, Gilberto Artioli, Martin T. Bale, Timothy Beach, Ferran Borrell, Todd Braje, Philip I. Buckland, Cano Ng Jiménez, José M. Capriles, Castillo A Diez, Ç Çilingiroğlu, Cleary M Negus, James Conolly, Peter R. Coutros, R. Alan Covey, Mauro Cremaschi, Alison Crowther, Lindsay Der, Lernia S Di, John F. Doershuk, William E. Doolittle, Kevin J. Edwards, Jon M. Erlandson, Damian Evans, Andrew Fairbairn, Patrick Faulkner, Gary Feinman, Ricardo Fernandes, Scott M. Fitzpatrick, Ralph Fyfe, E Garcea, S Goldstein, Rc Goodman, Guedes J Dalpoim, J Herrmann, P Hiscock, P Hommel, Ka Horsburgh, C Hritz, Jw Ives, A Junno, Jg Kahn, B Kaufman, C Kearns, Tr Kidder, F Lanoë, D Lawrence, G-A Lee, Mj Levin, Hb Lindskoug, Ja López-Sáez, S Macrae, R Marchant, Jm Marston, S Mcclure, Md Mccoy, Av Miller, M Morrison, Matuzeviciute G Motuzaite, J Müller, A Nayak, S Noerwidi, Tm Peres, Ce Peterson, L Proctor
School of Geography, Earth and Environmental Sciences
Environmentally transformative human use of land accelerated with the emergence of agriculture, but the extent, trajectory, and implications of these early changes are not well understood. An empirical global assessment of land use from 10,000 years before the present (yr B.P.) to 1850 CE reveals a planet largely transformed by hunter-gatherers, farmers, and pastoralists by 3000 years ago, considerably earlier than the dates in the land-use reconstructions commonly used by Earth scientists. Synthesis of knowledge contributed by more than 250 archaeologists highlighted gaps in archaeological expertise and data quality, which peaked for 2000 yr B.P. and in traditionally studied and …
Extreme Levels Of Fallout Radionuclides And Other Contaminants In Glacial Sediment (Cryoconite) And Implications For Downstream Aquatic Ecosystems, Philip N. Owens, William H. Blake, Geoffrey E. Millward
Extreme Levels Of Fallout Radionuclides And Other Contaminants In Glacial Sediment (Cryoconite) And Implications For Downstream Aquatic Ecosystems, Philip N. Owens, William H. Blake, Geoffrey E. Millward
School of Geography, Earth and Environmental Sciences
No abstract provided.
Rupture Geometries In Anisotropic Amphibolite Recorded By Pseudotachylytes In The Gairloch Shear Zone, Nw Scotland, Lr Campbell, Rj Phillips, Rc Walcott, Ge Lloyd
Rupture Geometries In Anisotropic Amphibolite Recorded By Pseudotachylytes In The Gairloch Shear Zone, Nw Scotland, Lr Campbell, Rj Phillips, Rc Walcott, Ge Lloyd
School of Geography, Earth and Environmental Sciences
Recent earthquakes involving complex multi-fault rupture have increased our appreciation of the variety of rupture geometries and fault interactions that occur within the short duration of coseismic slip. Geometrical complexities are intrinsically linked with spatially heterogeneous slip and stress drop distributions, and hence need incorporating into seismic hazard analysis. Studies of exhumed ancient fault zones facilitate investigation of rupture processes in the context of lithology and structure at seismogenic depths. In the Gairloch Shear Zone, NW Scotland, foliated amphibolites host pseudotachylytes that record rupture geometries of ancient low-magnitude (=MW3) seismicity. Pseudotachylyte faults are commonly foliation parallel, indicating exploitation of foliation …
Understanding Energy Transitions: The Changing Versions Of The Modern Infrastructure Ideal And The ‘Energy Underclass’ In South Africa, 1860-2019, Stephen Essex, Jiska De Groot
Understanding Energy Transitions: The Changing Versions Of The Modern Infrastructure Ideal And The ‘Energy Underclass’ In South Africa, 1860-2019, Stephen Essex, Jiska De Groot
School of Geography, Earth and Environmental Sciences
There is increasing recognition that the prospects of a post-networked city challenges the myth of the modernist ideal of a networked city and offers a more realistic proposition for energy transitions in the global south. This paper examines the energy transitions involved in the development of South Africa's versions of the modern infrastructural ideal for electricity provision since the nineteenth century. Four phases of South Africa's energy transition are identified, consisting of colonial, apartheid, post-apartheid and low-carbon phases. The paper argues that the agendas influencing the generation, distribution and consumption of electricity in South Africa are multiple and potentially conflicting, …
Changing The Record: Narrative Policy Analysis And The Politics Of Emissions Trading In New Zealand, Ian Bailey, Inderberg Th Jackson
Changing The Record: Narrative Policy Analysis And The Politics Of Emissions Trading In New Zealand, Ian Bailey, Inderberg Th Jackson
School of Geography, Earth and Environmental Sciences
No abstract provided.
Opinion: To Advance Sustainable Stewardship, We Must Document Not Only Biodiversity But Geodiversity, Franziska Schrodt, Joseph J. Bailey, D Kissling, Iain Stewart
Opinion: To Advance Sustainable Stewardship, We Must Document Not Only Biodiversity But Geodiversity, Franziska Schrodt, Joseph J. Bailey, D Kissling, Iain Stewart
School of Geography, Earth and Environmental Sciences
Rapid environmental change is driving the need for complex and comprehensive scientific information that supports policies aimed at managing natural resources through international treaties, platforms, and networks. One successful approach for delivering such information has been the development of Essential Variables for climate (1), oceans (2), biodiversity (3), and sustainable development goals (4) (ECVs, EOVs, EBVs, and ESDGVs, respectively). These efforts have improved consensus on terminology, and identified essential sets of measurements for characterizing and monitoring changes on our planet. In doing so, they have advanced science and informed policy. As an important but largely unanticipated consequence, conceptualizing these variables …
Realistic Measurement Uncertainties For Marine Macronutrient Measurements Conducted Using Gas Segmented Flow And Lab-On-Chip Techniques, A. J. Birchill, G. Clinton-Bailey, R. Hanz, E. Mawji, T. Cariou, C. White, S. J. Ussher, P. J. Worsfold, E. P. Achterberg, M. Mowlem
Realistic Measurement Uncertainties For Marine Macronutrient Measurements Conducted Using Gas Segmented Flow And Lab-On-Chip Techniques, A. J. Birchill, G. Clinton-Bailey, R. Hanz, E. Mawji, T. Cariou, C. White, S. J. Ussher, P. J. Worsfold, E. P. Achterberg, M. Mowlem
School of Geography, Earth and Environmental Sciences
No abstract provided.
The Removal Of Pharmaceuticals During Wastewater Treatment: Can It Be Predicted Accurately?, Sean Comber, Mike Gardner, Pernilla Sörme, Brian Ellor
The Removal Of Pharmaceuticals During Wastewater Treatment: Can It Be Predicted Accurately?, Sean Comber, Mike Gardner, Pernilla Sörme, Brian Ellor
School of Geography, Earth and Environmental Sciences
No abstract provided.
Catchment-Scale Cumulative Impact Of Human Activities On River Channels In The Late Anthropocene: Implications, Limitations, Prospect, Pw Downs, H Piegay
Catchment-Scale Cumulative Impact Of Human Activities On River Channels In The Late Anthropocene: Implications, Limitations, Prospect, Pw Downs, H Piegay
School of Geography, Earth and Environmental Sciences
Evidence for the proposed Anthropocene epoch in fluvial geomorphology hinges on the influence of human activities relative to natural forcing. However, research on cause-effect understanding in river channel evolution has rarely focused on the cumulative impact of multiple drivers for change, limiting insights. Systematic review of 25 recent studies professing to explain reach-scale channel responses to cumulative impacts of human activities and natural forcing over the recent past (ca. 1880–2005)reveals some consistencies in spatio-temporal response across various catchment sizes (median 3000 km2)in mostly industrialized nations. Common drivers for change include changing flood and flow regimes, dam construction, changing land uses …
The Effects Of Earthquakes And Fluids On The Metamorphism Of The Lower Continental Crust, B Jamtveit, A Petley‐Ragan, S Incel, Kg Dunkel, Et Al
The Effects Of Earthquakes And Fluids On The Metamorphism Of The Lower Continental Crust, B Jamtveit, A Petley‐Ragan, S Incel, Kg Dunkel, Et Al
School of Geography, Earth and Environmental Sciences
Rock rheology and density have first-order effects on the lithosphere's response to plate tectonic forces at plate boundaries. Changes in these rock properties are controlled by metamorphic transformation processes that are critically dependent on the presence of fluids. At the onset of a continental collision, the lower crust is in most cases dry and strong. However, if exposed to internally produced or externally supplied fluids, the thickened crust will react and be converted into a mechanically weaker lithology by fluid-driven metamorphic reactions. Fluid introduction is often associated with deep crustal earthquakes. Microstructural evidence, suggest that in strong highly stressed rocks, …