Last edited by Zolozshura
Tuesday, August 11, 2020 | History

2 edition of Temporal evolution of Tritium-3He Age in the North Atlantic found in the catalog.

Temporal evolution of Tritium-3He Age in the North Atlantic

Paul E. Robbins

Temporal evolution of Tritium-3He Age in the North Atlantic

implications for thermocline ventilation

by Paul E. Robbins

  • 367 Want to read
  • 38 Currently reading

Published by Woods Hole Oceanographic Institution in Woods Hole, Mass .
Written in English

    Subjects:
  • Thermocline (Oceanography),
  • Tritium dating.

  • Edition Notes

    Statementby Paul E. Robbins.
    SeriesMIT/WHOI -- 97-27., MIT/WHOI (Series) -- 97-27.
    ContributionsMassachusetts Institute of Technology., Woods Hole Oceanographic Institution.
    ID Numbers
    Open LibraryOL15495427M

    The Holocene (/ ˈ h ɒ l. ə ˌ s iː n, ˈ h ɒ l. oʊ-, ˈ h oʊ. l ə-, ˈ h oʊ. l oʊ-/ HOL-ə-seen, HOL-oh-, HOH-lə-, HOH-loh-) is the current geological began approximat cal years before present, after the last glacial period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene together form the Quaternary period.   The impact is greater for tritium-3He age than for CFC age, resulting in the upward curvature of the model age-age curve. Increasing either ~max or 1 enhances the non-linear mixing effects near the southern edge of the gyre tending to shift the ~'CFC--'CHe curve toward the left, advection via stronger meridional gradients and diffusivity.

    The geological history of Earth follows the major events in Earth's past based on the geological time scale, a system of chronological measurement based on the study of the planet's rock layers (stratigraphy).Earth formed about billion years ago by accretion from the solar nebula, a disk-shaped mass of dust and gas left over from the formation of the Sun, which also created the rest of. List of Ilustrations List of Contributors Introduction Section One Landscape, Settlements and Spatial Organization 1. 'Dark Age Economics' revisited: the English Fish-Bone Evidence 2. Viking Age Economics and the Origins of Commercial Cod Fisheries in the North Atlantic 3. Undertsanding a MEdieval Fishing Settlement along the Southern North Sea: Walraversijde, c. 4.

    Re-Os geochronology and fingerprinting of United Kingdom Atlantic margin oil: Temporal implications for regional petroleum systems We demonstrate that the Re-Os system can be used to understand the temporal evolution of a petroleum system as well as aid in the identification of source units. The Re-Os data for the 18 oils yield an age.   A book chapter in: New Caledonia: Geology, Geodynamic Evolution and Mineral Resources. Abstract The present-day seismic structure of the mantle under the North Atlantic Ocean indicates that the Iceland hotspot represents the surface expression of a deep mantle plume, which is thought to have erupted in the North Atlantic domain during the.


Share this book
You might also like
Spill Reporting Procedures Guide, 2000 Pages

Spill Reporting Procedures Guide, 2000 Pages

The pearl sister

The pearl sister

Equity & trusts concentrate

Equity & trusts concentrate

National Geographic World Political

National Geographic World Political

Memoirs of the Rev. Samuel J.Mills, late missionary to the South Western section of the United States and agent of the American colonization society deputed to explore the coast of Africa.

Memoirs of the Rev. Samuel J.Mills, late missionary to the South Western section of the United States and agent of the American colonization society deputed to explore the coast of Africa.

People, Parks, and preservation

People, Parks, and preservation

Quality improvement through competitive benchmarking.

Quality improvement through competitive benchmarking.

An essay on the law of God.

An essay on the law of God.

Gleanings from the diary and ministry of James Morrison.

Gleanings from the diary and ministry of James Morrison.

Annamese-English dictionary

Annamese-English dictionary

The last chance

The last chance

The Last of the Barons

The Last of the Barons

English regional novel

English regional novel

Freud and religion

Freud and religion

Temporal evolution of Tritium-3He Age in the North Atlantic by Paul E. Robbins Download PDF EPUB FB2

Tritium-3He age in the eastern Atlantic thermocline is seen to increase over time; the magnitude of the change is greatest for the deeper, more slowly ventilated layers of the thermocline. The first hypothesis examined is that the observed shift in the tracer age field is the manifestation of a slackening of the physical by: 4.

The difference in age is interpreted as the time Atlantic near-surface water spends in the Nansen Basin. Because tritium- 3 He age can be altered by mixing, it is generally considered a relative age. If, in a region like the NEW Polynya, the source waters and the `standing stack' are dated simultaneously, then the difference in the observed ages can be interpreted as the residence by: 5.

This thesis studies the physical mechanisms which ventilate the subtropical thermocline of the eastern North Atlantic. The coupled transient tracers tritium and 3He define a tracer age diagnostic.

To complement the examination of the steady-state tracer distribution, an interpretation of the temporal evolution of the tritium–3He age in the eastern Atlantic is considered.

The penetration of the coupled tritium and 3He tracers provide a sensitive diagnostic of the effects of by: Literature --The Circulation in the Western North Atlantic Determined by a Nonlinear Inverse Method.

Conclusion --On Oceanic Boundary Conditions for Tritium, on Tritiugenic 3He, and on the Tritium-3He Age Concept Introduction temporal evolution and regional distribution of those changes. Because of the poor observational. The east-northeast-trending Paleoproterozoic Nagssugtoqidian Orogen of West Greenland records the response of deep crust to collision of the North Atlantic craton and a lesser known cratonic mass to the north.

The results of this work may provide new insights on (1) processes preceding breakup and the initiation of segmented and strongly oblique shear margins, (2) the deformation history of nascent divergent plate boundaries, and (3) the kinematics of the southern North Atlantic and Alpine domain in western Europe.

The importance of lateral diffusion for the ventilation of the lower thermocline in the sub-tropical North Atlantic an interpretation of the temporal evolution of the tritium–3He age in the eastern Atlantic is considered.

Simple kinematic models of the ventilation of tritium and 3He are compared with the observed temporal character of. The book contains a thorough analysis of methods to combine data of val'ious types with dynamical concepts, and to assimilate data directly into ocean models.

The properties of geocl;temical tracers such as HC, He, Tritium and Freons and how they may be used to impose integral constraints on the ocean circulation are discussed. Kevin J. Anchukaitis, Edward R.

Cook, Benjamin I. Cook, Jessie Pearl, Rosanne D'Arrigo, Rob Wilson, Coupled Modes of North Atlantic Ocean‐Atmosphere Variability and the Onset of the Little Ice Age, Geophysical Research Letters, /GL, 46, 21, (), ().

To complement the examination of the steady-state tracer distribution, an interpretation of the temporal evolution of the tritium– 3 He age in the eastern Atlantic is considered. The penetration of the coupled tritium and 3 He tracers provide a sensitive diagnostic of the effects of mixing.

"Observations of temporal changes of tritium-3He age in the eastern North Atlantic thermocline: evidence for changes in ventilation?" Journal of Marine Research Robbins, P.

E., J. Price, et al. "On the importance of lateral diffusion for the ventilation of the lower thermocline in the Subtropical North Atlantic.". @article{osti_, title = {Evolution of the Arctic-North Atlantic and western Tethys}, author = {}, abstractNote = {A broad, multi-disciplinary overview of the late Paleozoic to recent geological evolution of much of northeastern North America, Greenland, all of Europe, and the northern parts of North Africa.

The author provides a synthesis of regional geology, which retraces the. According to Bronselaer et al. () temporal evolution of the global-mean surface-air temperature (SAT) shows meltwater-induced cooling translates to a reduced rate of global warming (Fig.

11), with a maximum divergence between standard models and models which include the effects of meltwater-induced cooling of ± °C in As. The sedimentary history and seismic structure of a deep-water turbidite basin in the Western North Atlantic Ocean has been investigated to understand further the evolution of abyssal plains.

This study integrates analyses of sedimentary and seismic facies in order to examine the temporal and spatial patterns of sedimentation on the northern.

A compilation of pre-bomb surface-water 14 C content indicates that the modern surface reservoir age is about ± yr in the tropics and in the North Atlantic. Although of different age, the undeformed Cretaceous Iberia/Newfoundland margins and the relics of the Jurassic Briançonnais/Adriatic margins preserved in the Alps document a similar spatial and temporal evolution of rifting suggesting that the evolution of both pairs of margins was controlled by the same processes.

Rifting appears to depend strongly on the thermal history of the lithosphere. Figure 1: Terminations I (TI), II (TII) and V (TV) forcing and climatic parameters.

(A) Orbital and (B) greenhouse gas forcing (Bereiter et al. ; Loulergue et al. ), together with records of (C) ice rafted debris, (D) Asian Monsoon intensity (Cheng et al.

), and (E) Antarctica air temperatures (Jouzel et al. TI: NA records (Waelbroeck et al. ), TII and TV: ODP Ice age, associated with ice dynamics, strongly controlled the spatial distributions and temporal evolution of snow properties.

A new, high resolution snow depth and density product is available for Arctic snow and sea ice studies and applications. List of Ilustrations List of Contributors Introduction Section One Landscape, Settlements and Spatial Organization 1. 'Dark Age Economics' revisited: the English Fish-Bone Evidence 2.

Viking Age Economics and the Origins of Commercial Cod Fisheries in the North Atlantic 3. Undertsanding a MEdieval Fishing Settlement along the Southern North Sea: Walraversijde, c. Gannets are large white birds with yellowish heads; black-tipped wings; and long bills. Northern gannets are the largest seabirds in the North Atlantic, having a wingspan of up to 2 m ( ft).The other two species occur in the temperate seas around southern Africa, southern Australia, and New Zealand.

Gannets hunt fish by diving into the sea from a height and pursuing their prey underwater. Atlantic mackerel (Scomber scombrus) occurs on both sides of the north Atlantic and has traditionally been grouped into 5 spawning components, some of which were thought to be isolated natal homing us studies have provided no evidence for cross Atlantic migration and no or weak support for isolated spawning components within either side of the North Atlantic.Data.

The Gulf of St. Lawrence is a semi-enclosed sea that connects the Great Lakes to the North Atlantic and is a summer feeding destination for several species of rorqual whales [].The data were collected in the Jacques-Cartier Passage and adjacent waters (roughly °N to °N and 63°W to 66°W (Fig.

1)) between and A field season lasted between the beginning of June and mid.