Results 111 to 120 of about 5,715 (297)
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
Geologic profile of Gay Head Cliff, Martha's Vineyard, Massachusetts [PDF]
Clifford A. Kaye
openalex +1 more source
Raman Analysis of Roman Mosaics From the Upper Guadalquivir Valley (Spain)
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
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
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
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]
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
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
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
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