Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Articles 1291 - 1320 of 1481

Full-Text Articles in Entire DC Network

Modelling The Transfer Of Supraglacial Meltwater To The Bed Of Leverett Glacier, Southwest Greenland, Cc Clason, Dwf Mair, Pw Nienow, Id Bartholomew, Et Al Jan 2015

Modelling The Transfer Of Supraglacial Meltwater To The Bed Of Leverett Glacier, Southwest Greenland, Cc Clason, Dwf Mair, Pw Nienow, Id Bartholomew, Et Al

School of Geography, Earth and Environmental Sciences

Meltwater delivered to the bed of the Greenland Ice Sheet is a driver of variable ice-motion through changes in effective pressure and enhanced basal lubrication. Ice surface velocities have been shown to respond rapidly both to meltwater production at the surface and to drainage of supraglacial lakes, suggesting efficient transfer of meltwater from the supraglacial to subglacial hydrological systems. Although considerable effort is currently being directed towards improved modelling of the controlling surface and basal processes, modelling the temporal and spatial evolution of the transfer of melt to the bed has received less attention. Here we present the results of …


Linkages Between Reach-Scale Physical Habitat And Invertebrate Assemblages In Upland Streams, Victoria S. Milner, Nigel J. Willby, David J. Gilvear, Charles Perfect Jan 2015

Linkages Between Reach-Scale Physical Habitat And Invertebrate Assemblages In Upland Streams, Victoria S. Milner, Nigel J. Willby, David J. Gilvear, Charles Perfect

School of Geography, Earth and Environmental Sciences

Determining the influence of physical habitat on biological structure in minimally disturbed settings is important if the effects of alterations to physical habitat are to be understood. This study tested whether reach-scale differences in physical habitat influence macroinvertebrate community composition at 24 sites in the Cairngorm Mountains, Scotland. Stream reaches were classified into channel types based on a geomorphic typology (i.e. step-pool, bedrock, plane-bed and pool-riffle). PERMANOVA indicated an overall significant relationship between the geomorphic typology and macroinvertebrate species-level composition, and among all combinations of channel types (such as steppool and pool-riffle, step-pool and bedrock). Most channel types were dominated …


Whether Crop Diversification Is Energy Efficient: An Empirical Analysis From Bangladesh, S Rahman, Mmh Kazal Jan 2015

Whether Crop Diversification Is Energy Efficient: An Empirical Analysis From Bangladesh, S Rahman, Mmh Kazal

School of Geography, Earth and Environmental Sciences

This study examines whether crop diversification provides economy in energy use and improves technical energy efficiency using a large survey data of 2,075 farms from 20 sub-districts of 17 districts in Bangladesh by applying a stochastic input-distance function approach. The results reveal that cereal production significantly increases energy use by 0.14% for every one percent increase` in output. Renewable source of energy constitutes 59.6% of total inputs and labour energy alone constitutes 39%. Significant output complementarity exists between cereal and oilseed enterprises but competition exist between jute with pulse and/or oilseed enterprises. The mean technical energy efficiency is estimated at …


Community Resilience And Social Memory, Ga Wilson Jan 2015

Community Resilience And Social Memory, Ga Wilson

School of Geography, Earth and Environmental Sciences

The notion of ‘resilience’ is rapidly emerging as a research topic in its own right, with the notion of ‘social resilience’ rapidly gaining importance. Yet, due to the relative novelty of the research field, discussions about processes of social resilience are not yet fully developed, especially with regard to how the inbuilt ‘memory’ of a local community helps shape resilience pathways (social memory). Interlinkages between social memory and community resilience are the focus of this study, with emphasis on analysis of the importance of rites, traditions and social learning processes for shaping community resilience/ vulnerability.


Coupled Techniques For Arsenic Speciation In Food And Drinking Water: A Review, Bashdar Sadee, M. E. Foulkes, S. J. Hill Jan 2015

Coupled Techniques For Arsenic Speciation In Food And Drinking Water: A Review, Bashdar Sadee, M. E. Foulkes, S. J. Hill

School of Geography, Earth and Environmental Sciences

No abstract provided.


Britons Abroad Or European Citizens? The Negotiation Of (Trans)National Space And Citizenship By British Migrants In France, Fiona Ferbrache, Richard Yarwood Jan 2015

Britons Abroad Or European Citizens? The Negotiation Of (Trans)National Space And Citizenship By British Migrants In France, Fiona Ferbrache, Richard Yarwood

School of Geography, Earth and Environmental Sciences

No abstract provided.


Adverse Outcome Pathways Can Drive Non‐Animal Approaches For Safety Assessment, N Burden, F Sewell, Me Andersen, A Boobis, Jk Chipman, Mtd Cronin, Th Hutchinson, I Kimber, M Whelan Jan 2015

Adverse Outcome Pathways Can Drive Non‐Animal Approaches For Safety Assessment, N Burden, F Sewell, Me Andersen, A Boobis, Jk Chipman, Mtd Cronin, Th Hutchinson, I Kimber, M Whelan

School of Geography, Earth and Environmental Sciences

AbstractAdverse Outcome Pathways (AOPs) provide an opportunity to develop new and more accurate safety assessment processes for drugs and other chemicals, and may ultimately play an important role in regulatory decision making. Not only can the development and application of AOPs pave the way for the development of improved evidence‐based approaches for hazard and risk assessment, there is also the promise of a significant impact on animal welfare, with a reduced reliance on animal‐based methods. The establishment of a useable and coherent knowledge framework under which AOPs will be developed and applied has been a first critical step towards realizing …


A Record Of Spontaneous Subduction Initiation In The Izu-Bonin-Mariana Arc, Rj Arculus, O Ishizuka, Ka Bogus, M Gurnis, R Hickey-Vargas, Mh Aljahdali, An Bandini-Maeder, Ap Barth, Pa Brandl, L Drab, Rdm Guerra, M Hamada, F Jiang, K Kanayama, S Kender, Y Kusano, H Li, Lc Loudin, M Maffione, Km Marsaglia, A Mccarthy, S Meffre, A Morris, M Neuhaus, Ip Savov, C Sena, Tfj Iii, Der Land C Van, Gm Yogodzinski, Z Zhang Jan 2015

A Record Of Spontaneous Subduction Initiation In The Izu-Bonin-Mariana Arc, Rj Arculus, O Ishizuka, Ka Bogus, M Gurnis, R Hickey-Vargas, Mh Aljahdali, An Bandini-Maeder, Ap Barth, Pa Brandl, L Drab, Rdm Guerra, M Hamada, F Jiang, K Kanayama, S Kender, Y Kusano, H Li, Lc Loudin, M Maffione, Km Marsaglia, A Mccarthy, S Meffre, A Morris, M Neuhaus, Ip Savov, C Sena, Tfj Iii, Der Land C Van, Gm Yogodzinski, Z Zhang

School of Geography, Earth and Environmental Sciences

No abstract provided.


New Insights Into Landslide Processes Around Volcanic Islands From Remotely Operated Vehicle (Rov) Observations Offshore Montserrat, S. F.L. Watt, M. Jutzeler, P. J. Talling, S. N. Carey, R. S.J. Sparks, M. Tucker, A. J. Stinton, J. K. Fisher, D Wall‐Palmer, V. Hühnerbach, S. G. Moreton Jan 2015

New Insights Into Landslide Processes Around Volcanic Islands From Remotely Operated Vehicle (Rov) Observations Offshore Montserrat, S. F.L. Watt, M. Jutzeler, P. J. Talling, S. N. Carey, R. S.J. Sparks, M. Tucker, A. J. Stinton, J. K. Fisher, D Wall‐Palmer, V. Hühnerbach, S. G. Moreton

School of Geography, Earth and Environmental Sciences

AbstractSubmarine landslide deposits have been mapped around many volcanic islands, but interpretations of their structure, composition, and emplacement are hindered by the challenges of investigating deposits directly. Here we report on detailed observations of four landslide deposits around Montserrat collected by Remotely Operated Vehicles, integrating direct imagery and sampling with sediment core and geophysical data. These complementary approaches enable a more comprehensive view of large‐scale mass‐wasting processes around island‐arc volcanoes than has been achievable previously. The most recent landslide occurred at 11.5–14 ka (Deposit 1; 1.7 km3) and formed a radially spreading hummocky deposit that is morphologically similar to many …


Metals In Boat Paint Fragments From Slipways, Repair Facilities And Abandoned Vessels: An Evaluation Using Field Portable Xrf., Andrew Turner, Sean Comber, Aldous B. Rees, Dimitrios Gkiokas, Kevin Solman Jan 2015

Metals In Boat Paint Fragments From Slipways, Repair Facilities And Abandoned Vessels: An Evaluation Using Field Portable Xrf., Andrew Turner, Sean Comber, Aldous B. Rees, Dimitrios Gkiokas, Kevin Solman

School of Geography, Earth and Environmental Sciences

Paint flaking off abandoned vessels or generated during boat repair is hazardous to human health and wildlife. In this study, a means of screening paint fragments using a field portable-X-ray fluorescence (FP-XRF) spectrometer is described. The technique is capable of delivering rapid, surficial measurements of Ba, Cu, Pb and Zn down to concentrations less than 150 μg g(-1), and Sn and Cr to concentrations of a few hundred μg g(-1). Application of the technique to fragments collected from slipways, yards, hardstandings, abandoned boats and ships undergoing maintenance throughout the EU reveal highly variable concentrations of metals among samples from the …


What Remains Of The Intersubjective?: On The Presencing Of Self And Other, Paul Simpson Jan 2015

What Remains Of The Intersubjective?: On The Presencing Of Self And Other, Paul Simpson

School of Geography, Earth and Environmental Sciences

No abstract provided.


Developing Students’ Energy Literacy In Higher Education, D Cotton, W Miller, J Winter, I Bailey, S Sterling Jan 2015

Developing Students’ Energy Literacy In Higher Education, D Cotton, W Miller, J Winter, I Bailey, S Sterling

School of Geography, Earth and Environmental Sciences

No abstract provided.


Determining Riverine Sediment Storage Mechanisms Of Biologically Reactive Phosphorus In Situ Using Dgt, Emily E. Burns, Sean Comber, William Blake, Rupert Goddard, Laurence Couldrick Jan 2015

Determining Riverine Sediment Storage Mechanisms Of Biologically Reactive Phosphorus In Situ Using Dgt, Emily E. Burns, Sean Comber, William Blake, Rupert Goddard, Laurence Couldrick

School of Geography, Earth and Environmental Sciences

No abstract provided.


Review Of Consenting Processes For Ocean Energy In Selected European Union Member States, T Simas, Am O’Hagan, J O’Callaghan, S Hamawi, D Magagna, I Bailey, Dm Greaves, J-B Saulnier, D Marina, J Bald, C Huertas, J Sundberg Jan 2015

Review Of Consenting Processes For Ocean Energy In Selected European Union Member States, T Simas, Am O’Hagan, J O’Callaghan, S Hamawi, D Magagna, I Bailey, Dm Greaves, J-B Saulnier, D Marina, J Bald, C Huertas, J Sundberg

School of Geography, Earth and Environmental Sciences

No abstract provided.


Community Resilience And Land Degradation In Forest And Shrubland Socio-Ecological Systems: Evidence From Gorgoglione, Basilicata, Italy, Claire Kelly, Agostino Ferrara, Geoff A. Wilson, Francesco Ripullone, Angelo Nolè, Nichola Harmer, Luca Salvati Jan 2015

Community Resilience And Land Degradation In Forest And Shrubland Socio-Ecological Systems: Evidence From Gorgoglione, Basilicata, Italy, Claire Kelly, Agostino Ferrara, Geoff A. Wilson, Francesco Ripullone, Angelo Nolè, Nichola Harmer, Luca Salvati

School of Geography, Earth and Environmental Sciences

Assessing the resilience of communities is assuming greater importance at a time of global economic upheaval, climatic and socio-demographic changes. The past 10–15 years have seen a significant increase in the number of studies addressing resilience issues at community level from a variety of perspectives,and although the resilience of communities in dealing with disturbance feature strongly in these studies, less work appears to have been undertaken at the interface between community resilience and land degradation. In addition, little attention has been paid to land degradation, desertification risk and community resilience at the forest–community interface, despite the fact that forest ecosystems …


Rapid And Slow: Varying Magma Ascent Rates As A Mechanism For Vulcanian Explosions, Mike Cassidy, Paul D. Cole, Kelby E. Hicks, Nick R. Varley, Nial Peters, Allan H. Lerner Jan 2015

Rapid And Slow: Varying Magma Ascent Rates As A Mechanism For Vulcanian Explosions, Mike Cassidy, Paul D. Cole, Kelby E. Hicks, Nick R. Varley, Nial Peters, Allan H. Lerner

School of Geography, Earth and Environmental Sciences

No abstract provided.


Isotopic Analysis Of Jurassic (Callovian) Mollusks From The Christian Malford Lagerstatte (Uk): Implications For Ocean Water Temperature Estimates Based On Belemnoids, Gregory D. Price, Malcolm B. Hart, Philip R. Wilby, Kevin N. Page Jan 2015

Isotopic Analysis Of Jurassic (Callovian) Mollusks From The Christian Malford Lagerstatte (Uk): Implications For Ocean Water Temperature Estimates Based On Belemnoids, Gregory D. Price, Malcolm B. Hart, Philip R. Wilby, Kevin N. Page

School of Geography, Earth and Environmental Sciences

No abstract provided.


Lost And Hound: The More-Than-Human Networks Of Rural Policing, Richard Yarwood Jan 2015

Lost And Hound: The More-Than-Human Networks Of Rural Policing, Richard Yarwood

School of Geography, Earth and Environmental Sciences

No abstract provided.


The Relational Geographies Of Policing And Security, Richard Yarwood, Till Paasche Jan 2015

The Relational Geographies Of Policing And Security, Richard Yarwood, Till Paasche

School of Geography, Earth and Environmental Sciences

AbstractThis paper considers the roles of policing and security in the geographies of everyday public and semi‐public space. We contend that while security is concerned with territory, policing relates to place. We consider the relationship between security and territory before examining the relationship between policing and place. In the final section, we argue that a relational view of space is needed to understand how practices of policing and security shape space and, in turn, the lives of people using it.


Seaweed Fails To Prevent Ocean Acidification Impact On Foraminifera Along A Shallow-Water Co2 Gradient, Laura R. Pettit, Christopher W. Smart, Malcolm B. Hart, Marco Milazzo, Jason M. Hall-Spencer Jan 2015

Seaweed Fails To Prevent Ocean Acidification Impact On Foraminifera Along A Shallow-Water Co2 Gradient, Laura R. Pettit, Christopher W. Smart, Malcolm B. Hart, Marco Milazzo, Jason M. Hall-Spencer

School of Geography, Earth and Environmental Sciences

No abstract provided.


A Multidimensional Statistical Framework To Explore Seasonal Profile, Severity And Land-Use Preferences Of Wildfires In A Mediterranean Country, L Salvati, A Ferrara, G Mancino, Cl Kelly, F Chianucci, P Corona Jan 2015

A Multidimensional Statistical Framework To Explore Seasonal Profile, Severity And Land-Use Preferences Of Wildfires In A Mediterranean Country, L Salvati, A Ferrara, G Mancino, Cl Kelly, F Chianucci, P Corona

School of Geography, Earth and Environmental Sciences

No abstract provided.


The Acute Toxicity Of Thallium To Freshwater Organisms: Implications For Risk Assessment, Kristi Tatsi, Andrew Turner, Richard D. Handy, Benjamin J. Shaw Jan 2015

The Acute Toxicity Of Thallium To Freshwater Organisms: Implications For Risk Assessment, Kristi Tatsi, Andrew Turner, Richard D. Handy, Benjamin J. Shaw

School of Geography, Earth and Environmental Sciences

No abstract provided.


Foraminifera Of The Fal Estuary (Cornwall), Including Taxa Associated With Maerl Beds, Mb Hart, K Cartwright, B Fisk, Cw Smart, C Consolaro, Jm Hall-Spencer Jan 2015

Foraminifera Of The Fal Estuary (Cornwall), Including Taxa Associated With Maerl Beds, Mb Hart, K Cartwright, B Fisk, Cw Smart, C Consolaro, Jm Hall-Spencer

School of Geography, Earth and Environmental Sciences

No abstract provided.


'Christians, Out Here?' Encountering Street-Pastors In The Post-Secular Spaces Of The Uk's Night-Time Economy, Jennie Middleton, Richard Yarwood Jan 2015

'Christians, Out Here?' Encountering Street-Pastors In The Post-Secular Spaces Of The Uk's Night-Time Economy, Jennie Middleton, Richard Yarwood

School of Geography, Earth and Environmental Sciences

No abstract provided.


Evaluation Of Analytical Instrumentation. Part Xxvi: Instrumentation For Voltammetry, Cb Braungardt Jan 2015

Evaluation Of Analytical Instrumentation. Part Xxvi: Instrumentation For Voltammetry, Cb Braungardt

School of Geography, Earth and Environmental Sciences

The Analytical Methods Committee has received and approved the following report from the Instrumental Criteria Sub-Committee.


Productivity And Efficiency Impacts Of Urea Deep Placement Technology In Modern Rice Production: An Empirical Analysis From Bangladesh, S Rahman, Bk Barmon Jan 2015

Productivity And Efficiency Impacts Of Urea Deep Placement Technology In Modern Rice Production: An Empirical Analysis From Bangladesh, S Rahman, Bk Barmon

School of Geography, Earth and Environmental Sciences

Rice is the most dominant field crop in Bangladesh covering 75% of the total cultivated area and consumes 80% of the total fertilizers alone. Nevertheless, the productivity of rice in Bangladesh remains one of the lowest in the world. Urea, the main source of nitrogen (N), plays a key role in rice production, is required in large amount, is the most limited nutrient and also suffers from heavy system losses. A worldwide crisis of urea fertilizer in 2008 spurred the need to economise on its use with urgency. The Urea Deep Placement (UDP) technology is aimed at increasing N fertilizer …


Adapting Relationships With Place: Investigating The Evolving Place Attachment And ‘Sense Of Place’ Of Uk Higher Education Students During A Period Of Intense Transition, Mark Holton Jan 2015

Adapting Relationships With Place: Investigating The Evolving Place Attachment And ‘Sense Of Place’ Of Uk Higher Education Students During A Period Of Intense Transition, Mark Holton

School of Geography, Earth and Environmental Sciences

In recent years interest has emerged regarding the geographies of higher education students, particularly in patterns of mobility and dispersion. While anecdotal rhetoric suggests a ‘typical student’ exists within UK institutions. What resonates is the notion that students are inherently heterogeneous, experiencing University in differing ways and times according to their circumstances and year of study. This paper uses ‘walking interviews’ conducted with University of Portsmouth students as a method to unpack how ‘non-local’ students might go about interpreting their sense of place within their term-time location. This methodology was designed specifically to ensure discussions of ‘sense of place’ remain …


Channelling Of Hydrothermal Fluids During The Accretion And Evolution Of The Upper Oceanic Crust: Sr Isotope Evidence From Odp Hole 1256d, Michelle Harris, Rosalind M. Coggon, Christopher E. Smith-Duque, Matthew J. Cooper, James A. Milton, Damon A.H. Teagle Jan 2015

Channelling Of Hydrothermal Fluids During The Accretion And Evolution Of The Upper Oceanic Crust: Sr Isotope Evidence From Odp Hole 1256d, Michelle Harris, Rosalind M. Coggon, Christopher E. Smith-Duque, Matthew J. Cooper, James A. Milton, Damon A.H. Teagle

School of Geography, Earth and Environmental Sciences

No abstract provided.


Urban Regeneration: Thirty Years Of Change On Plymouth’S Waterfront, Stephen Essex, Peter Ford Jan 2015

Urban Regeneration: Thirty Years Of Change On Plymouth’S Waterfront, Stephen Essex, Peter Ford

School of Geography, Earth and Environmental Sciences

Waterfront revitalisation has become one of the main areas of concentration and activity in urban regeneration as former port, military and resort sites seek new and appropriate uses. Various regeneration approaches have been implemented over the years, with most involving central-government funding, but with different levels of partnership with the private sector and/or the local community. This paper explores in detail the transformation of the waterfront in the English city of Plymouth from its former functions as a naval port and dockyard, with both military and commercial port activities, to its predominantly post-industrial focus on residential, leisure, tourism, and heritage …


Crustal‐Scale Degassing Due To Magma System Destabilization And Magma‐Gas Decoupling At Soufrière Hills Volcano, Montserrat, T. E. Christopher, J. Blundy, K. Cashman, P. Cole, M. Edmonds, P. J. Smith, R. S.J. Sparks, A. Stinton Jan 2015

Crustal‐Scale Degassing Due To Magma System Destabilization And Magma‐Gas Decoupling At Soufrière Hills Volcano, Montserrat, T. E. Christopher, J. Blundy, K. Cashman, P. Cole, M. Edmonds, P. J. Smith, R. S.J. Sparks, A. Stinton

School of Geography, Earth and Environmental Sciences

AbstractActivity since 1995 at Soufrière Hills Volcano (SHV), Montserrat has alternated between andesite lava extrusion and quiescence, which are well correlated with seismicity and ground deformation cycles. Large variations in SO2 flux do not correlate with these alternations, but high and low HCl/SO2 characterize lava dome extrusion and quiescent periods respectively. Since lava extrusion ceased (February 2010) steady SO2 emissions have continued at an average rate of 374 tonnes/day (± 140 t/d), and incandescent fumaroles (temperatures up to 610oC) on the dome have not changed position or cooled. Occasional short bursts (over several hours) of higher (∼ 10x) SO2 flux …