Results 41 to 50 of about 5,095 (245)

Peat humification and climate change: a multi-site comparison from mires in south-east Alaska [PDF]

open access: yesMires and Peat, 2008
Peatland records of Holocene palaeoclimate have been widely used in Europe. Their potential in western North America remains largely unexploited despite an abundance of candidate sites.
R.J. Payne, J.J. Blackford
doaj   +2 more sources

Detection of Tephra Layers in Antarctic Sediment Cores with Hyperspectral Imaging. [PDF]

open access: yesPLoS ONE, 2016
Tephrochronology uses recognizable volcanic ash layers (from airborne pyroclastic deposits, or tephras) in geological strata to set unique time references for paleoenvironmental events across wide geographic areas.
Ismael F Aymerich   +3 more
doaj   +1 more source

Stratigraphy and chronology of a 15ka sequence of multi-sourced silicic tephras in a montane peat bog, eastern North Island, New Zealand. [PDF]

open access: yes, 1999
We document the stratigraphy, composition, and chronology of a succession of 16 distal, silicic tephra layers interbedded with lateglacial and Holocene peats and muds up to c. 15 000 radiocarbon years (c.
Lowe, David J.   +2 more
core   +2 more sources

Geological evidence for paleotsunamis along eastern Sicily (Italy): an overview [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2012
We present geological evidence for paleotsunamis along the ~230 km-long coast of eastern Sicily (Italy); combining this information with historical data, we reconstruct a unique history of tsunami inundations.
P. M. De Martini   +6 more
doaj   +1 more source

Relation between Central European Climate Change and Eifel Volcanism during the Last 130,000 Years: The ELSA-23-Tephra-Stack

open access: yesQuaternary
The analysis of tephra layers in maar lake sediments of the Eifel shows 14 well-visible tephra during the last glacial cycle from the Holocene to the Eemian (0–130,000 yr b2k).
Frank Sirocko   +5 more
doaj   +1 more source

Tephra studies in New Zealand: an historical review. [PDF]

open access: yes, 1990
The development of tephra studies in New Zealand may be divided into four main periods: Period 1, late 19th century to late 1920s; Period 2, late 1920s to early 1950s; Period 3, early 1950s to 1973; Period 4, 1973 to late 1980s.
Lowe, David J.
core   +2 more sources

Revised calendar date for the Taupo eruption derived by ¹⁴C wiggle-matching using a New Zealand kauri ¹⁴C calibration data set [PDF]

open access: yes, 2011
Taupo volcano in central North Island, New Zealand, is the most frequently active and productive rhyolite volcano on Earth. Its latest explosive activity about 1800 years ago generated the spectacular Taupo eruption, the most violent eruption known in ...
Boswijk, Gretel   +4 more
core   +2 more sources

Mid-to Late Holocene East Antarctic ice-core tephrochronology: Implications for reconstructing volcanic eruptions and assessing their climatic impacts over the last 5,500 years

open access: yesQuaternary Science Reviews
Ice cores are powerful archives for reconstructing volcanism as they contain both soluble ...
P. Abbott   +8 more
semanticscholar   +1 more source

Big grains go far: understanding the discrepancy between tephrochronology and satellite infrared measurements of volcanic ash [PDF]

open access: yesAtmospheric Measurement Techniques, 2015
There is a large discrepancy between the size of volcanic ash particles measured on the ground at least 500 km from their source volcano (known as cryptotephra) and those reported by satellite remote sensing (effective radius of 0.5–9 μm; 95% of ...
J. A. Stevenson   +4 more
doaj   +1 more source

Vedde Ash constrains Younger Dryas glacier re-advance and rapid glacio-isostatic rebound on Svalbard

open access: yesQuaternary Science Advances, 2022
The distal deposition of tephra from explosive volcanism has the potential to geochronologically constrain sedimentary archives and landforms.
Wesley R. Farnsworth   +12 more
doaj   +1 more source

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