Postglacial evolution of a formerly glaciated valley: Reconstructing sediment supply, fan building, and confluence effects at the millennial time scale

2018 ◽  
Vol 130 (9-10) ◽  
pp. 1457-1473 ◽  
Author(s):  
Francesco Brardinoni ◽  
Vincenzo Picotti ◽  
Stefano Maraio ◽  
Pier Paolo Bruno ◽  
Maurizio Cucato ◽  
...  
Keyword(s):  
Time Scale ◽  
Sediment Supply ◽  
Millennial Time Scale ◽  
Glaciated Valley

Comparing landscape evolution models with quantitative field data at the millennial time scale in the Belgian loess belt

2011 ◽  
Vol 36 (10) ◽  
pp. 1300-1312 ◽  
Author(s):  
A. J. A. M. Temme ◽  
I. Peeters ◽  
E. Buis ◽  
A. Veldkamp ◽  
G. Govers
Keyword(s):  
Time Scale ◽  
Field Data ◽  
Landscape Evolution ◽  
Millennial Time Scale

Variations and controls of iron oxides and isotope compositions during paddy soil evolution over a millennial time scale

2018 ◽  
Vol 476 ◽  
pp. 340-351 ◽  
Author(s):  
Lai-Ming Huang ◽  
Xiao-Xu Jia ◽  
Gan-Lin Zhang ◽  
Aaron Thompson ◽  
Fang Huang ◽  
...  
Keyword(s):  
Iron Oxides ◽  
Paddy Soil ◽  
Time Scale ◽  
Soil Evolution ◽  
Millennial Time Scale

scholarly journals Easy Volcanic Aerosol (EVA v1.0): An idealized forcing generator for climate simulations

2016 ◽  
Author(s):  
Matthew Toohey ◽  
Bjorn Stevens ◽  
Hauke Schmidt ◽  
Claudia Timmreck
Keyword(s):  
Time Scale ◽  
Climate Models ◽  
Single Scattering ◽  
Stratospheric Aerosol ◽  
Asymmetry Factor ◽  
Volcanic Aerosol ◽  
Climate Simulations ◽  
Simple Scaling ◽  
Millennial Time Scale ◽  
Aerosol Properties

Abstract. The Easy Volcanic Aerosol (EVA) forcing generator produces stratospheric aerosol optical properties as a function of time, latitude, height and wavelength for a given input list of volcanic eruption attributes. EVA is based on a parameterized three-box model of stratospheric transport, and simple scaling relationships used to derive mid-visible (550 nm) aerosol optical depth and aerosol effective radius from stratospheric sulfate mass. Pre-calculated look up tables computed from Mie theory are used to produce wavelength dependent aerosol extinction, single scattering albedo and scattering asymmetry factor values. The structural form of EVA, and the tuning of its parameters, are chosen to produce best agreement with the satellite-based reconstruction of stratospheric aerosol properties following the 1991 Pinatubo eruption, and with prior millennial-time scale forcing reconstructions including the 1815 eruption of Tambora. EVA can be used to produce volcanic forcing for climate models which is based on recent observations and physical understanding, but internally self-consistent over any time-scale of choice. In addition, EVA is constructed so as to allow for easy modification of different aspects of aerosol properties, in order to be used in model experiments to help advance understanding of what aspects of the volcanic aerosol are important for the climate system.

scholarly journals Accelerator Mass Spectrometry at Arizona: Geochronology of the Climatic Record and Connections with the Ocean

2002 ◽  
Vol 2 ◽  
pp. 1579-1593 ◽  
Author(s):  
J.T. Jull ◽  
G.S. Burr ◽  
J.W. Beck ◽  
D.J. Donahue ◽  
D. Biddulph ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Radioactive Waste ◽  
Environmental Conditions ◽  
Accelerator Mass Spectrometry ◽  
Time Scale ◽  
Southern Oscillation ◽  
Waste Dump ◽  
Short Term ◽  
Millennial Time Scale ◽  
Climatic Record

There are many diverse uses of accelerator mass spectrometry (AMS).14C studies at our laboratory include much research related to paleoclimate, with14C as a tracer of past changes in environmental conditions as observed in corals, marine sediments, and many terrestrial records. Terrestrial records can also show the influence of oceanic oscillations, whether they are short term, such as ENSO (El Niño/Southern Oscillation), or on the millennial time scale. In tracer applications, we have developed the use of129I as well as14C as tracers for nuclear pollution studies around radioactive waste dump sites, in collaboration with IAEA. We discuss some applications carried out in Tucson, AZ, for several of these fields and hope to give some idea of the breadth of these studies.

East Asia winter monsoon variations on a millennial time-scale before the last glacial-interglacial cycle

1999 ◽  
Vol 14 (2) ◽  
pp. 101-110 ◽  
Author(s):  
Huayu Lu ◽  
Ko Van Huissteden ◽  
Zhisheng An ◽  
Govert Nugteren ◽  
Jef Vandenberghe
Keyword(s):  
East Asia ◽  
Time Scale ◽  
Winter Monsoon ◽  
Last Glacial ◽  
Millennial Time Scale ◽  
The Last Glacial

scholarly journals Assessment of F200 fluence for major solar energetic particle events on the multi-millennial time scale

2016 ◽  
Author(s):  
Ilya Usoskin ◽  
Gennady Kovaltsov ◽  
Edward Cliver ◽  
William F. Dietrich ◽  
Allan Tylka
Keyword(s):  
Time Scale ◽  
Energetic Particle ◽  
Solar Energetic Particle ◽  
Solar Energetic Particle Events ◽  
Millennial Time Scale

scholarly journals Cosmic-ray variability on the multi-millennial time scale: A new multi-proxy reconstruction

2019 ◽  
Author(s):  
Ilya Usoskin ◽  
Chi Ju Wu ◽  
Natalie Krivova ◽  
Sami K. Solanki ◽  
Gennady Kovaltsov ◽  
...  
Keyword(s):  
Time Scale ◽  
Cosmic Ray ◽  
Millennial Time Scale

scholarly journals A 500 kyr record of global sea-level oscillations in the Gulf of Lion, Mediterranean Sea: new insights into MIS 3 sea-level variability

2012 ◽  
Vol 8 (3) ◽  
pp. 1067-1077 ◽  
Author(s):  
J. Frigola ◽  
M. Canals ◽  
I. Cacho ◽  
A. Moreno ◽  
F. J. Sierro ◽  
...  
Keyword(s):  
Grain Size ◽  
Sea Level ◽  
Continental Margin ◽  
Time Scale ◽  
High Sensitivity ◽  
Gulf Of Lion ◽  
Sea Level Oscillations ◽  
Millennial Time Scale ◽  
The Impact ◽  
Upper Slope

Abstract. Borehole PRGL1-4 drilled in the upper slope of the Gulf of Lion provides an exceptional record to investigate the impact of late Pleistocene orbitally-driven glacio-eustatic sea-level oscillations on the sedimentary outbuilding of a river fed continental margin. High-resolution grain-size and geochemical records supported by oxygen isotope chronostratigraphy allow reinterpreting the last 500 ka upper slope seismostratigraphy of the Gulf of Lion. Five main sequences, stacked during the sea-level lowering phases of the last five glacial-interglacial 100-kyr cycles, form the upper stratigraphic outbuilding of the continental margin. The high sensitivity of the grain-size record down the borehole to sea-level oscillations can be explained by the great width of the Gulf of Lion continental shelf. Sea level driven changes in accommodation space over the shelf cyclically modified the depositional mode of the entire margin. PRGL1-4 data also illustrate the imprint of sea-level oscillations at millennial time-scale, as shown for Marine Isotopic Stage 3, and provide unambiguous evidence of relative high sea-levels at the onset of each Dansgaard-Oeschger Greenland warm interstadial. The PRGL1-4 grain-size record represents the first evidence for a one-to-one coupling of millennial time-scale sea-level oscillations associated with each Dansgaard-Oeschger cycle.

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