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Articles 451 - 480 of 1481
Full-Text Articles in Entire DC Network
Soil Erosion And Sediment Transport In Tanzania: Part I – Sediment Source Tracing In Three Neighbouring River Catchments, Maarten Wynants, Linus Munishi, Kelvin Mtei, Samuel Bodé, Aloyce Patrick, Alex Taylor, David Gilvear, Patrick Ndakidemi, William H. Blake, Pascal Boeckx
Soil Erosion And Sediment Transport In Tanzania: Part I – Sediment Source Tracing In Three Neighbouring River Catchments, Maarten Wynants, Linus Munishi, Kelvin Mtei, Samuel Bodé, Aloyce Patrick, Alex Taylor, David Gilvear, Patrick Ndakidemi, William H. Blake, Pascal Boeckx
School of Geography, Earth and Environmental Sciences
No abstract provided.
Introduction To Focus Section: The Geographies Of Crime And Policing In The Global Countryside, Vania Ceccato, Richard Yarwood
Introduction To Focus Section: The Geographies Of Crime And Policing In The Global Countryside, Vania Ceccato, Richard Yarwood
School of Geography, Earth and Environmental Sciences
No abstract provided.
Late Ordovician Climate Change And Extinctions Driven By Elevated Volcanic Nutrient Supply, Jack Longman, Benjamin J.W. Mills, Hayley R. Manners, Thomas M. Gernon, Martin R. Palmer
Late Ordovician Climate Change And Extinctions Driven By Elevated Volcanic Nutrient Supply, Jack Longman, Benjamin J.W. Mills, Hayley R. Manners, Thomas M. Gernon, Martin R. Palmer
School of Geography, Earth and Environmental Sciences
The Late Ordovician (~459–444 million years ago) was characterized by global cooling, glaciation and severe mass extinction. These events may have been driven by increased delivery of the nutrient phosphorus (P) to the ocean and associated increases in marine productivity, but it is not clear why this occurred in the two pulses identified in the geological record. We link both cooling phases—and the extinction—to volcanic eruptions through marine deposition of nutrient-rich ash and the weathering of terrestrially emplaced ash and lava. We then reconstruct the influence of Late Ordovician volcanic P delivery on the marine system by coupling an estimate …
Feeling Redundancy, Paul Simpson
Feeling Redundancy, Paul Simpson
School of Geography, Earth and Environmental Sciences
No abstract provided.
Seasonal Sea Ice Persisted Through The Holocene Thermal Maximum At 80°N, Anna J. Pieńkowski, Katrine Husum, Simon T. Belt, Ulysses Ninnemann, Denizcan Köseoğlu, Dmitry V. Divine, Lukas Smik, Jochen Knies, Kelly Hogan, Riko Noormets
Seasonal Sea Ice Persisted Through The Holocene Thermal Maximum At 80°N, Anna J. Pieńkowski, Katrine Husum, Simon T. Belt, Ulysses Ninnemann, Denizcan Köseoğlu, Dmitry V. Divine, Lukas Smik, Jochen Knies, Kelly Hogan, Riko Noormets
School of Geography, Earth and Environmental Sciences
The cryospheric response to climatic warming responsible for recent Arctic sea ice decline can be elucidated using marine geological archives which offer an important long-term perspective. The Holocene Thermal Maximum, between 10 and 6 thousand years ago, provides an opportunity to investigate sea ice during a warmer-than-present interval. Here we use organic biomarkers and benthic foraminiferal stable isotope data from two sediment cores in the northernmost Barents Sea (>80 °N) to reconstruct seasonal sea ice between 11.7 and 9.1 thousand years ago. We identify the continued persistence of sea-ice biomarkers which suggest spring sea ice concentrations as high as …
Best Practices For Monitoring And Assessing The Ecological Response To River Restoration, Judy England, Natalie Angelopoulos, Susan Cooksley, Jennifer Dodd, Andrew Gill, David Gilvear, Matthew Johnson, Marc Naura, Matthew O’Hare, Angus Tree, Jennifer Wheeldon, Martin A. Wilkes
Best Practices For Monitoring And Assessing The Ecological Response To River Restoration, Judy England, Natalie Angelopoulos, Susan Cooksley, Jennifer Dodd, Andrew Gill, David Gilvear, Matthew Johnson, Marc Naura, Matthew O’Hare, Angus Tree, Jennifer Wheeldon, Martin A. Wilkes
School of Geography, Earth and Environmental Sciences
Nature-based solutions are widely advocated for freshwater ecosystem conservation and restoration. As increasing amounts of river restoration are undertaken, the need to understand the ecological response to different measures and where measures are best applied becomes more pressing. It is essential that appraisal methods follow a sound scientific approach. Here, experienced restoration appraisal experts review current best practice and academic knowledge to make recommendations and provide guidance that will enable practitioners to gather and analyse meaningful data, using scientific rigor to appraise restoration success. What should be monitored depends on the river type and the type and scale of intervention. …
Architecture Of Pericratonic Yukon-Tanana Terrane In The Northern Cordillera, J J Ryan, A Zagorevski, N R Cleven, A J Parsons, N L Joyce
Architecture Of Pericratonic Yukon-Tanana Terrane In The Northern Cordillera, J J Ryan, A Zagorevski, N R Cleven, A J Parsons, N L Joyce
School of Geography, Earth and Environmental Sciences
West-central Yukon and eastern Alaska are characterized by widespread metamorphic rocks that form part of the allochthonous, composite Yukon-Tanana terrane and parautochthonous North American margin. Structural windows through the Yukon-Tanana terrane exposeparautochthonous North American margin in that broad region, particularly as mid-Cretaceous extensional core complexes. Both the Yukon-Tanana terrane and parautochthonous North American margin share the same Late Devonian history, making their discrimination difficult; however, distinct post-LateDevonian magmatic and metamorphic histories assist in discriminating Yukon-Tanana terrane from parautochthonous North American margin rocks. The suture between Yukon-Tanana terrane and parautochthonous North American margin is obscured by many episodes of high-strain deformation. …
Overview Of Cordilleran Oceanic Terranes And Their Significance For The Tectonic Evolution Of The Northern Cordillera, A Zagorevski, C.R. Van Staal, J J Ryan, J.H. Bedard, A Bogatu, D Canil, Mark J. Coleman, Ml Golding, N L Joyce, C Lawley, S Mcgoldrick, M Mihalynuk, D Milidragovic, A J Parsons, P Schiarizza
Overview Of Cordilleran Oceanic Terranes And Their Significance For The Tectonic Evolution Of The Northern Cordillera, A Zagorevski, C.R. Van Staal, J J Ryan, J.H. Bedard, A Bogatu, D Canil, Mark J. Coleman, Ml Golding, N L Joyce, C Lawley, S Mcgoldrick, M Mihalynuk, D Milidragovic, A J Parsons, P Schiarizza
School of Geography, Earth and Environmental Sciences
No abstract provided.
Putting Nature Centre Stage? The Challenges Of ‘Mainstreaming’ Biodiversity In The Planning Process, Olivia Wilson
Putting Nature Centre Stage? The Challenges Of ‘Mainstreaming’ Biodiversity In The Planning Process, Olivia Wilson
School of Geography, Earth and Environmental Sciences
No abstract provided.
Are Sustainable Drainage Systems (Suds) Effective At Retaining Dissolved Trace Elements?, Jasmine Humphrey, Chris Rowett, Jonathan Tyers, Mark Gregson, Sean Comber
Are Sustainable Drainage Systems (Suds) Effective At Retaining Dissolved Trace Elements?, Jasmine Humphrey, Chris Rowett, Jonathan Tyers, Mark Gregson, Sean Comber
School of Geography, Earth and Environmental Sciences
No abstract provided.
Accumulation Of Legacy Fallout Radionuclides In Cryoconite On Isfallsglaciären (Arctic Sweden) And Their Downstream Spatial Distribution, Caroline C. Clason, Will H. Blake, Nick Selmes, Alex Taylor, Pascal Boeckx, Jessica Kitch, Stephanie C. Mills, Giovanni Baccolo, Geoffrey E. Millward
Accumulation Of Legacy Fallout Radionuclides In Cryoconite On Isfallsglaciären (Arctic Sweden) And Their Downstream Spatial Distribution, Caroline C. Clason, Will H. Blake, Nick Selmes, Alex Taylor, Pascal Boeckx, Jessica Kitch, Stephanie C. Mills, Giovanni Baccolo, Geoffrey E. Millward
School of Geography, Earth and Environmental Sciences
Abstract. The release of legacy contaminants such as fallout radionuclides (FRNs) in response to glacier retreat is a process that has received relatively little attention to date, yet may have consequences as a source of secondary contamination as glaciers melt and down-waste in response to a warming climate. The presence of FRNs in glacier-fed catchments is poorly understood in comparison to other contaminants, yet there is now emerging evidence from multiple regions of the global cryosphere for substantially augmented FRN activities in cryoconite. Here we report concentrated FRNs in both cryoconite and proglacial sediments from the Isfallsglaciären catchment in Arctic …
30-Year Record Of Himalaya Mass-Wasting Reveals Landscape Perturbations By Extreme Events, Joshua N. Jones, Sarah J. Boulton, Martin Stokes, Georgina L. Bennett, Michael R.Z. Whitworth
30-Year Record Of Himalaya Mass-Wasting Reveals Landscape Perturbations By Extreme Events, Joshua N. Jones, Sarah J. Boulton, Martin Stokes, Georgina L. Bennett, Michael R.Z. Whitworth
School of Geography, Earth and Environmental Sciences
In mountainous environments, quantifying the drivers of mass-wasting is fundamental for understanding landscape evolution and improving hazard management. Here, we quantify the magnitudes of mass-wasting caused by the Asia Summer Monsoon, extreme rainfall, and earthquakes in the Nepal Himalaya. Using a newly compiled 30-year mass-wasting inventory, we establish empirical relationships between monsoon-triggered mass-wasting and monsoon precipitation, before quantifying how other mass-wasting drivers perturb this relationship. We find that perturbations up to 5 times greater than that expected from the monsoon alone are caused by rainfall events with 5-to-30-year return periods and short-term (< 2 year) earthquake-induced landscape preconditioning. In 2015, the landscape preconditioning is strongly controlled by the topographic signature of the Gorkha earthquake, whereby high Peak Ground Accelerations coincident with high excess topography (rock volume above a landscape threshold angle) amplifies landscape damage. Furthermore, earlier earthquakes in 1934, 1988 and 2011 are not found to influence 2015 mass-wasting.
Metal Pollutant Pathways In Cohesive Coastal Catchments: Influence Of Flocculation And Biopolymers On Partitioning And Flux, R. J. Schindler, S. D.W. Comber, A. J. Manning
Metal Pollutant Pathways In Cohesive Coastal Catchments: Influence Of Flocculation And Biopolymers On Partitioning And Flux, R. J. Schindler, S. D.W. Comber, A. J. Manning
School of Geography, Earth and Environmental Sciences
No abstract provided.
Characterizing Hydration Of The Ocean Crust Using Shortwave Infrared Microimaging Spectroscopy Of Icdp Oman Drilling Project Cores, Molly A. Crotteau, Rebecca N. Greenberger, Bethany L. Ehlmann, George R. Rossman, Michelle Harris, Peter B. Kelemen, Damon A.H. Teagle
Characterizing Hydration Of The Ocean Crust Using Shortwave Infrared Microimaging Spectroscopy Of Icdp Oman Drilling Project Cores, Molly A. Crotteau, Rebecca N. Greenberger, Bethany L. Ehlmann, George R. Rossman, Michelle Harris, Peter B. Kelemen, Damon A.H. Teagle
School of Geography, Earth and Environmental Sciences
No abstract provided.
Designing A Graphene Coating-Based Supercapacitor With Lithium Ion Electrolyte: An Experimental And Computational Study Via Multiscale Modeling, Joseph Paul Baboo, Shumaila Babar, Dhaval Kale, Constantina Lekakou, Giuliano M. Laudone
Designing A Graphene Coating-Based Supercapacitor With Lithium Ion Electrolyte: An Experimental And Computational Study Via Multiscale Modeling, Joseph Paul Baboo, Shumaila Babar, Dhaval Kale, Constantina Lekakou, Giuliano M. Laudone
School of Geography, Earth and Environmental Sciences
Graphene electrodes are investigated for electrochemical double layer capacitors (EDLCs) with lithium ion electrolyte, the focus being the effect of the pore size distribution (PSD) of electrode with respect to the solvated and desolvated electrolyte ions. Two graphene electrode coatings are examined: a low specific surface area (SSA) xGNP-750 coating and a high SSA coating based on a-MWGO (activated microwave expanded graphene oxide). The study comprises an experimental and a computer modeling part. The experimental part includes fabrication, material characterization and electrochemical testing of an EDLC with xGNP-750 coating electrodes and electrolyte 1M LiPF6 in EC:DMC. The computational part includes …
Evaluating Soil Carbon As A Proxy For Erosion Risk In The Spatio-Temporal Complex Hydropower Catchment In Upper Pangani, Northern Tanzania, Aloyce I.M. Amasi, Maarten Wynants, Remigius A. Kawala, Shovi F. Sawe, William H. Blake, Kelvin M. Mtei
Evaluating Soil Carbon As A Proxy For Erosion Risk In The Spatio-Temporal Complex Hydropower Catchment In Upper Pangani, Northern Tanzania, Aloyce I.M. Amasi, Maarten Wynants, Remigius A. Kawala, Shovi F. Sawe, William H. Blake, Kelvin M. Mtei
School of Geography, Earth and Environmental Sciences
Land use conversion is generally accompanied by large changes in soil organic carbon (SOC). SOC influences soil erodibility through its broad control on aggregate stability, soil structure and infiltration capacity. However, soil erodibility is also influenced by soil properties, clay mineralogy and other human activities. This study aimed to evaluate soil organic carbon as proxy of soil erosion risk in the Nyumba ya Mungu (NYM) catchment in Northern Tanzania. Soil organic carbon (SOC) was measured by an AgroCares scanner from which the soil organic matter (SOM) was derived using the conversional van Bemmelen factor of 1.72. A regression analysis performed …
Desertification Of Iran In The Early Twenty-First Century: Assessment Using Climate And Vegetation Indices, Dameneh H Eskandari, Hamid Gholami, Matt W. Telfer, Jesús Rodrigo Comino, Adrian L. Collins, John D. Jansen
Desertification Of Iran In The Early Twenty-First Century: Assessment Using Climate And Vegetation Indices, Dameneh H Eskandari, Hamid Gholami, Matt W. Telfer, Jesús Rodrigo Comino, Adrian L. Collins, John D. Jansen
School of Geography, Earth and Environmental Sciences
AbstractRemote sensing of specific climatic and biogeographical parameters is an effective means of evaluating the large-scale desertification status of drylands affected by negative human impacts. Here, we identify and analyze desertification trends in Iran for the period 2001–2015 via a combination of three indices for vegetation (NPP—net primary production, NDVI—normalized difference vegetation index, LAI—leaf area index) and two climate indices (LST—land surface temperature, P—precipitation). We combine these indices to identify and map areas of Iran that are susceptible to land degradation. We then apply a simple linear regression method, the Mann–Kendall non-parametric test, and the Theil–Sen estimator to identify long-term …
Perfluorinated Alkyl Substances: Sewage Treatment And Implications For Receiving Waters, S. D.W. Comber, M. J. Gardner, B. Ellor
Perfluorinated Alkyl Substances: Sewage Treatment And Implications For Receiving Waters, S. D.W. Comber, M. J. Gardner, B. Ellor
School of Geography, Earth and Environmental Sciences
No abstract provided.
Equilibrium Calculations Of Iron Speciation And Apparent Iron Solubility In The Celtic Sea At Ambient Seawater Ph Using The Nica-Donnan Model, Kechen Zhu, Antony J. Birchill, Angela Milne, Simon Ussher, Matthew P. Humphreys, Nealy Carr, Claire Mahaffey, Maeve C. Lohan, Eric P. Achterberg, Martha Gledhill
Equilibrium Calculations Of Iron Speciation And Apparent Iron Solubility In The Celtic Sea At Ambient Seawater Ph Using The Nica-Donnan Model, Kechen Zhu, Antony J. Birchill, Angela Milne, Simon Ussher, Matthew P. Humphreys, Nealy Carr, Claire Mahaffey, Maeve C. Lohan, Eric P. Achterberg, Martha Gledhill
School of Geography, Earth and Environmental Sciences
No abstract provided.
Building Climate Change Adaptation And Resilience Through Soil Organic Carbon Restoration In Sub‐Saharan Rural Communities: Challenges And Opportunities, Alex Taylor, Maarten Wynants, Linus Munishi, Claire Kelly, Kelvin Mtei, Francis Mkilema, Patrick Ndakidemi, Mona Nasseri, Alice Kalnins, Aloyce Patrick, David Gilvear, William Blake
Building Climate Change Adaptation And Resilience Through Soil Organic Carbon Restoration In Sub‐Saharan Rural Communities: Challenges And Opportunities, Alex Taylor, Maarten Wynants, Linus Munishi, Claire Kelly, Kelvin Mtei, Francis Mkilema, Patrick Ndakidemi, Mona Nasseri, Alice Kalnins, Aloyce Patrick, David Gilvear, William Blake
School of Geography, Earth and Environmental Sciences
Soil organic carbon (SOC) is widely recognised as pivotal in soil function, exerting im-portant controls on soil structure, moisture retention, nutrient cycling and biodiversity, which in turn underpins a range of provisioning, supporting and regulatory ecosystem services. SOC stocks in sub‐Saharan Africa (SSA) are threatened by changes in land practice and climatic factors, which destabilises the soil system and resilience to continued climate change. Here, we provide a review of the role of SOC in overall soil health and the challenges and opportunities associated with main-taining and building SOC stocks in SSA. As an exemplar national case, we focus on …
Washing Load Influences The Microplastic Release From Polyester Fabrics By Affecting Wettability And Mechanical Stress, Michela Volgare, F De Falco, Roberto Avolio, Rachele Castaldo, Maria Emanuela Errico, Gennaro Gentile, Veronica Ambrogi, Mariacristina Cocca
Washing Load Influences The Microplastic Release From Polyester Fabrics By Affecting Wettability And Mechanical Stress, Michela Volgare, F De Falco, Roberto Avolio, Rachele Castaldo, Maria Emanuela Errico, Gennaro Gentile, Veronica Ambrogi, Mariacristina Cocca
School of Geography, Earth and Environmental Sciences
AbstractMicroplastics released from textiles during the washing process represent the most prevalent type of microparticles found in different environmental compartments and ecosystems around the world. Release of microfibres during the washing process of synthetic textiles is due to the mechanical and chemical stresses that clothes undergo in washing machines. Several washing process parameters, conditions, formulations of laundering additives have been correlated to microfibre release and some of them have been identified to affect microfibre release during washing process, while no correlation has been evaluated between microfibre release and washing load. In the present study, microfibre release was evaluated as function …
Inorganic Nitrogen And Phosphorus In Western European Aerosol And The Significance Of Dry Deposition Flux Into Stratified Shelf Waters, Caroline White, Simon J. Ussher, Mark F. Fitzsimons, Sov Atkinson, E. Malcolm S. Woodward, Mingxi Yang, Thomas G. Bell
Inorganic Nitrogen And Phosphorus In Western European Aerosol And The Significance Of Dry Deposition Flux Into Stratified Shelf Waters, Caroline White, Simon J. Ussher, Mark F. Fitzsimons, Sov Atkinson, E. Malcolm S. Woodward, Mingxi Yang, Thomas G. Bell
School of Geography, Earth and Environmental Sciences
No abstract provided.
Dry And Wet Deposition Of Microplastics In A Semi-Arid Region (Shiraz, Iran), Sajjad Abbasi, Andrew Turner
Dry And Wet Deposition Of Microplastics In A Semi-Arid Region (Shiraz, Iran), Sajjad Abbasi, Andrew Turner
School of Geography, Earth and Environmental Sciences
Microplastics (MP) have been retrieved from settled dusts and rainfall collected monthly over a period of a year and daily over an additional period of ten days in the city of Shiraz and at an elevated remote site (Mount Derak) in Iran. Total monthly deposition ranged from about 1000 to 3500 MP m−2 at Shiraz and about 200 to 600 MP m−2 at Mount Derak, with greater deposition taking place during the dry months (June to November) than in months when precipitation events occurred. Overall, MP deposition was dominated by dry deposition, with precipitation appearing to washout MP and inhibit …
Polyvinyl Chloride In Consumer And Environmental Plastics, With A Particular Focus On Metal-Based Additives, Andrew Turner, Montserrat Filella
Polyvinyl Chloride In Consumer And Environmental Plastics, With A Particular Focus On Metal-Based Additives, Andrew Turner, Montserrat Filella
School of Geography, Earth and Environmental Sciences
Polyvinyl chloride (PVC) is one of the most widely used thermoplastics but is also a material of concern because of the generation and release of harmful chemicals during its life cycle. Amongst the chemicals added to PVC are metal-based stabilisers and Sb-based halogenated flame retardant synergists. However, very little quantitative information exists on these additives, and in particular in PVC lost to the environment. In this study, the distribution of PVC amongst consumer plastics in societal circulation and plastics retrieved from marine and lacustrine beaches and agricultural soils are compared, along with the presence and concentrations of Ba, Cd, Pb, …
Exploring Relationship Between Perception Indicators And Mitigation Behaviors Of Soil Erosion In Undergraduate Students In Sonora, Mexico, Alondra María Díaz-Rodríguez, Claire Kelly, Valle A Del, Claudio Bravo-Linares, William Blake, Hugo Velasco, Dos Anjos R Meigikos, Laura Fernanda Barrera-Hernández, Los Santos-Villalobos S De
Exploring Relationship Between Perception Indicators And Mitigation Behaviors Of Soil Erosion In Undergraduate Students In Sonora, Mexico, Alondra María Díaz-Rodríguez, Claire Kelly, Valle A Del, Claudio Bravo-Linares, William Blake, Hugo Velasco, Dos Anjos R Meigikos, Laura Fernanda Barrera-Hernández, Los Santos-Villalobos S De
School of Geography, Earth and Environmental Sciences
Soil erosion represents a critical socio-economic and environmental hazard for Mexico and the world. Given that soil erosion is a phenomenon influenced by human activities, it is essential to know the level of cultural perspectives on this matter. An instrument with eight scales was applied to 275 university students from a northwestern Mexican city, which measured the knowledge about soil erosion, self-efficacy in solving the problem, future perspectives, perceived consequences, obstacles to addressing soil erosion, and mitigation intentions and behaviors. To analyze the relationship between the scales and the intentions and behaviors of soil erosion mitigation, a model of structural …
Comparative Planetology Of The Inner Solar System; Using Flood Basalts On The Moon (Lunar Maria), Mars (Tharsis & Elysium), And Earth To Investigate The Magmatic Evolution Of Our Solar System., F Willcocks, St Grimes, Nr Stephen
Comparative Planetology Of The Inner Solar System; Using Flood Basalts On The Moon (Lunar Maria), Mars (Tharsis & Elysium), And Earth To Investigate The Magmatic Evolution Of Our Solar System., F Willcocks, St Grimes, Nr Stephen
School of Geography, Earth and Environmental Sciences
No abstract provided.
Soil Fertility And Land Sustainability In Usangu Basin-Tanzania, M Mng’Ong’O, Linus K. Munishi, William Blake, Sean Comber, Thomas H. Hutchinson, Patrick A. Ndakidemi
Soil Fertility And Land Sustainability In Usangu Basin-Tanzania, M Mng’Ong’O, Linus K. Munishi, William Blake, Sean Comber, Thomas H. Hutchinson, Patrick A. Ndakidemi
School of Geography, Earth and Environmental Sciences
No abstract provided.
Reconstructing The Changes In Sedimentation And Source Provenance In East African Hydropower Reservoirs: A Case Study Of Nyumba Ya Mungu In Tanzania, Aloyce I.M. Amasi, Maarten Wynants, Remegius A. Kawalla, Shovi Sawe, Linus Munishi, William H. Blake, Kelvin M. Mtei
Reconstructing The Changes In Sedimentation And Source Provenance In East African Hydropower Reservoirs: A Case Study Of Nyumba Ya Mungu In Tanzania, Aloyce I.M. Amasi, Maarten Wynants, Remegius A. Kawalla, Shovi Sawe, Linus Munishi, William H. Blake, Kelvin M. Mtei
School of Geography, Earth and Environmental Sciences
This study aimed to reconstruct the sedimentation rates over time and identify the changing sources of sediment in a major hydropower reservoir in Tanzania, the Nyumba ya Mungu (NYM). Fallout 210Pb measurements were used to estimate age of sediment deposits and broad changes in sedimentation rates were reconstructed. Sedimentation peaks were cross referenced to geochemical profiles of allogenic and autogenic elemental constituents of the sediment column to confirm a causal link. Finally, geochemical fingerprinting of the sediment cores and potential sources were compared using a Bayesian mixing model (MixSIAR) to attribute the dominant riverine and land use sources to the …
Paleoseismological Findings At A New Trench Indicate The 1714 M8.1 Earthquake Ruptured The Main Frontal Thrust Over All The Bhutan Himalaya, Yuqiu Zhao, Djordje Grujic, Santanu Baruah, Dawchu Drukpa, Joanne Elkadi, György Hetényi, Georgina E. King, Zoë K. Mildon, Nityam Nepal, Caroline Welte
Paleoseismological Findings At A New Trench Indicate The 1714 M8.1 Earthquake Ruptured The Main Frontal Thrust Over All The Bhutan Himalaya, Yuqiu Zhao, Djordje Grujic, Santanu Baruah, Dawchu Drukpa, Joanne Elkadi, György Hetényi, Georgina E. King, Zoë K. Mildon, Nityam Nepal, Caroline Welte
School of Geography, Earth and Environmental Sciences
The 1714 Bhutan earthquake was one of the largest in the Himalaya in the last millennium. We show that the surface rupture caused by this earthquake extended further to the east than previously known, it was at least 175 km long, with slip exceeding 11 m at our study site. The age of the surface rupture was constrained by a combination of radiocarbon and traditional optically stimulated luminescence dating of affected river sediments. Computations using empirical scaling relationships, fitting historical observations and paleoseismic data, yielded a plausible magnitude of Mw 8.1 ± 0.4 and placed the hypocentre of the 1714 …
Hydrothermal Alteration Of The Ocean Crust And Patterns In Mineralization With Depth As Measured By Micro‐Imaging Infrared Spectroscopy, Rebecca N. Greenberger, Michelle Harris, Bethany L. Ehlmann, Molly A. Crotteau, Peter B. Kelemen, Craig E. Manning, Damon A.H. Teagle
Hydrothermal Alteration Of The Ocean Crust And Patterns In Mineralization With Depth As Measured By Micro‐Imaging Infrared Spectroscopy, Rebecca N. Greenberger, Michelle Harris, Bethany L. Ehlmann, Molly A. Crotteau, Peter B. Kelemen, Craig E. Manning, Damon A.H. Teagle
School of Geography, Earth and Environmental Sciences
Processes for formation, cooling, and altering Earth's ocean crust are not yet completely understood due to challenges in access and sampling. Here, we use contiguous micro-imaging infrared spectroscopy to develop complete-core maps of mineral occurrence and investigate spatial patterns in the hydrothermal alteration of 1.2 km of oceanic crust recovered from Oman Drilling Project Holes GT1A, GT2A, and GT3A drilled in the Samail Ophiolite, Oman. The imaging spectrometer shortwave infrared sensor measured reflectance of light at wavelengths 1.0–2.6 μm at 250–260 μm/pixel, resulting in >1 billion independent measurements. We map distributions of nine key primary and secondary minerals/mineral groups—clinopyroxene, amphibole, …