Results 51 to 60 of about 26,308 (272)

PlumeTraP: A New MATLAB-Based Algorithm to Detect and Parametrize Volcanic Plumes from Visible-Wavelength Images

open access: yesRemote Sensing, 2022
Tephra plumes from explosive volcanic eruptions can be hazardous for the lives and livelihoods of people living in the proximity of volcanoes. Monitoring and forecasting tephra plumes play essential roles in the detection, characterization and hazard ...
Riccardo Simionato   +3 more
doaj   +1 more source

Out in the cold? A review of Early Middle Palaeolithic settlements in northern Central Europe, age data and geological preconditions for site formation and preservation

open access: yesBoreas, EarlyView.
The characteristics of settlement of Neanderthals in northern Central Europe during the earlier phases of the Middle Palaeolithic (Marine Isotope Stage 8–6) have been a matter of debate for decades, specifically regarding the population dynamics at such latitudes during the coldest phases. In this paper, we review the known archaeological record of the
Gianpiero Di Maida   +5 more
wiley   +1 more source

Securing the past for the future – why climate proxy archives should be protected

open access: yesBoreas, EarlyView.
Glaciers, corals, speleothems, peatlands, trees and other natural proxy archives are essential for global climate change research, but their scarcity and fragility are not equally recognised. Here, we introduce a rapidly disappearing source of palaeoclimatic, environmental and archaeological evidence from some 5000 years ago in the Fenland of eastern ...
Tatiana Bebchuk, Ulf Büntgen
wiley   +1 more source

The middle Waikato Basin and hills [PDF]

open access: yes, 1992
The middle Waikato (or Hamilton) Basin is a roughly oval-shaped depression more than 80 km north to south and more than 40 km wide. The basin, except in the south, is almost completely surrounded by ranges up to 300 m high, broken by only a few gaps.
Lowe, David J., Selby, Michael J.
core   +1 more source

Correlation of Papanetu Tephra to Karapiti Tephra, central North Island, New Zealand [PDF]

open access: yesNew Zealand Journal of Geology and Geophysics, 1986
Abstract New road exposures around Lake Rotoaira and south and east of Lake Taupo have provided the opportunity to re-examine the stratigraphic relationships between the rhyolitic Papanetu and Karapiti Tephras (c. 10 000 years B.P.). Papanetu Tephra is everywhere typical of a distal rhyolitic tephra; it is thin (< 2 cm), fine grained, and forms ...
Paul C. Froggatt, Graeme J. Solloway
openaire   +1 more source

Refining the timing of Middle Pleistocene (MIS 12 to MIS 6) ice advances into northern central Europe: sedimentological analysis and single‐grain luminescence dating of glaciotectonic complexes and tunnel‐valley fills

open access: yesBoreas, EarlyView.
We summarize the current state of knowledge on the age of the Middle Pleistocene ice advances into northern central Europe and provide 25 new single‐grain feldspar luminescence ages of Elsterian and Saalian glacigenic sediments to constrain the age of the ice advances and their tentative correlation with marine isotope stages/substages.
Niklas von Soest   +10 more
wiley   +1 more source

Rootless tephra stratigraphy and emplacement processes [PDF]

open access: yesBulletin of Volcanology, 2017
Volcanic rootless cones are the products of thermohydraulic explosions involving rapid heat transfer from active lava (fuel) to external sources of water (coolant). Rootless eruptions are attributed to molten fuel-coolant interactions (MFCIs), but previous studies have not performed systematic investigations of rootless tephrostratigraphy and grain ...
Hamilton, Christopher W.   +3 more
openaire   +3 more sources

On goodness‐of‐fit testing for self‐exciting point processes

open access: yesScandinavian Journal of Statistics, EarlyView.
Abstract Despite the wide usage of parametric point processes in theory and applications, a sound goodness‐of‐fit procedure to test whether a given parametric model is appropriate for data coming from a self‐exciting point process has been missing in the literature.
José Carlos Fontanesi Kling   +1 more
wiley   +1 more source

Discovery of halloysite books in a ~270,000 year-old buried tephra deposit in northern New Zealand [PDF]

open access: yes, 2010
As part of a wider study examining the geomechanical properties, especially sensitivity, of sequences of Quaternary pyroclastic and associated deposits and buried soils in the landslide-prone western Bay of Plenty area near Tauranga, eastern North Island,
Churchman, G. Jock   +3 more
core  

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

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