Results 111 to 120 of about 5,715 (297)

Reconstructing the late Pleistocene glacial history of the Cairngorm Mountains, Scotland, using paired cosmogenic 10Be and 14C

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Chronologic and geomorphic evidence of past glaciations is largely recorded in areas at relatively low elevation and/or landscapes defined by high glacial erosion. As a result, data from areas that did not experience significant glacial erosion and the highest elevation locations are lacking from reconstructions of past ice masses.
Samuel E. Kelley   +5 more
wiley   +1 more source

Raman Analysis of Roman Mosaics From the Upper Guadalquivir Valley (Spain)

open access: yesJournal of Raman Spectroscopy, EarlyView.
This work is focused on the Raman analysis of two Roman mosaics from Jaén (Spain) using portable and benchtop equipment, complemented by elemental analysis using EDXRF and petrographic analysis. The results obtained have provided a detailed characterisation of the tesserae.
A. Sánchez   +7 more
wiley   +1 more source

Thermally Optimised Raman Spectroscopy for Safe Analysis of Wall Paintings and Application to Lorenzetti's Masterpiece

open access: yesJournal of Raman Spectroscopy, EarlyView.
A portable dual‐wavelength Raman system (exc. 785 and 1064 nm) based on a four‐channel innovative probe for safe characterisation of artworks is presented. This instrument enables non‐contact real‐time monitoring of the temperature rise and laser power modulation to prevent overheating during Raman spectroscopy, through direct emissivity and ...
D. Ciofini   +7 more
wiley   +1 more source

Effects of (Assisted) Natural Regeneration on Infiltrability and Preferential Flow Pathways in the Khasi Hills (Meghalaya, NE India)

open access: yesLand Degradation &Development, Volume 36, Issue 5, Page 1564-1578, March 2025.
ABSTRACT Intensified slash‐and‐burn cultivation and forest clearing have caused severe land degradation in the Khasi Hills (Meghalaya plateau, NE India). Despite very high annual rainfall, the region faces severe water scarcity during the dry season.
Bob W. Zwartendijk   +5 more
wiley   +1 more source

Challenges in Road Construction and Timber Harvesting in Japan

open access: yesCroatian Journal of Forest Engineering, 2017
Japan Islands fundamentally consisted of the accretionary wedges. The stratum of accretionary wedges inclined, and it made dip slope and opposite slope.
Hideo Sakai
doaj  

The geology of the Strumble Head - Fishguard region, Dyfed, Wales [PDF]

open access: yes, 1979
An investigation was undertaken on the volcanic and volcaniclastic rocks forming the Fishguard Volcanic Group of Lower Ordovician age, which crop out in the Strumble Head - Fishguard area of Southwest Dyfed (North Pembrokeshire).\ud The nature of the lavas and volcaniclastic rocks suggests that this episode of vulcanicity was entirely subaqueous in ...
openaire  

Investigation of variable aeration of monodisperse mixtures: implications for Pyroclastic Density Currents Head of Geology, Lecturer Senior Lecturer in Geology

open access: yes
The high mobility of dense pyroclastic density currents (PDCs) is commonly attributed to high gas pore pressures. However, the influence of spatial and temporal variations in pore pressure within PDCs has yet to be investigated. Theory suggests that variability in the fluidisation and aeration of a current will have a significant control on PDC flow ...
Gregory Smith   +3 more
openaire   +1 more source

Impact of Climate Policy Uncertainty on Agriculture Development: Multidimensional Analysis From Land Use, Food Structure, and Carbon Emissions

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Global climate change poses unprecedented challenges for agricultural sustainability, yet significant knowledge gaps persist regarding the multidimensional impacts of climate policy uncertainty (CPU) on agricultural systems. Previous research has primarily focused on isolated aspects such as land‐use changes, production decisions, or emission ...
Jiapeng Dai
wiley   +1 more source

A bedform phase diagram for dense granular currents Senior Lecturer in Geology Head of Geology, Lecturer Post doc researcher

open access: yes
Pyroclastic density currents are a life-threatening volcanic hazard. Our understanding and hazard assessments of these flows primarily rely on interpretations of their deposits. The occurrence of stratified layers, cross-stratification, and dune bedforms in these deposits has been assumed as indicative of dilute, turbulent, flows causing traction ...
Gregory Smith   +7 more
openaire   +1 more source

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