Structure and Dynamics of Earth's Deep Interior

10.1029/gm046 ◽  
1988 ◽  
Keyword(s):  
Structure And Dynamics ◽  
Deep Interior

Bumps on the core—mantle boundary: geomagnetic and gravitational evidence revisited

1982 ◽  
Vol 306 (1492) ◽  
pp. 281-289 ◽  
Keyword(s):  
Statistical Tests ◽  
Correlation Coefficients ◽  
Long Wavelength ◽  
Mantle Boundary ◽  
Core Mantle Boundary ◽  
The Core ◽  
Structure And Dynamics ◽  
Optimum Position ◽  
Deep Interior ◽  
Gravitational Anomalies

Evidence for the presence of undulations or temperature variations, or both, at the core-mantle boundary comes from the remarkably high correlation between the pattern of long-wavelength gravitational anomalies and the corresponding pattern of anomalies in the geomagnetic potential when the latter is rotated in longitude. Since gravitational anomalies originate at or above the core surface and the magnetic anomalies originate within the core, the correlation, if statistically significant, must be a manifestation of processes occurring at the core-mantle interface and has important implications for the structure and dynamics of the Earth’s deep interior. Indeed, the discovery of the correlation stemmed from considerations of interactions between motions in the core and mantle and can be regarded as evidence in favour of deep mantle convection. The large value for the correlation coefficient is now accepted but, notwithstanding our published statistical tests to the contrary, opinions are often expressed in the literature that any low-order convergent field might be expected to show a high correlation with gravity when rotated to the optimum position. Here we reiterate that this is not so, and illustrate our argument with a number of randomly generated field models that have correlation coefficients from 0.2 to 0.8.

scholarly journals Raymond Hide. 17 May 1929—6 September 2016

2019 ◽  
Vol 67 ◽  
pp. 191-215
Author(s):  
P. L. Read
Keyword(s):  
Large Scale ◽  
Deterministic Chaos ◽  
New Developments ◽  
Structure And Dynamics ◽  
University Of Oxford ◽  
University Of Cambridge ◽  
Deep Interior ◽  
Geostrophic Turbulence ◽  
The University ◽  
Theoretical Results

Raymond Hide was a physicist who worked at the interfaces between fundamental hydrodynamics, magnetohydrodynamics (MHD), the geophysics of the Earth's interior, atmosphere and oceans and those of other planets. He received his PhD from the University of Cambridge, and spent the majority of his career at the Met Office and then the University of Oxford. In laboratory studies of sloping thermal convection carried out at Cambridge in the early 1950s he discovered various regimes of vacillation and other multiply-periodic intransitive flows as well as aperiodic flows, now recognized as a form of geostrophic turbulence. These findings influenced seminal mathematical studies of what came to be known as deterministic chaos, and provided a paradigm for interpreting large-scale flows in the atmospheres of the Earth and other planets. Related contributions include general theoretical results tested by crucial laboratory experiments on boundary layers, Taylor columns and detached shear layers. His contributions to MHD include the concepts of potential magnetic field and magnetic superhelicity. He also initiated research on the dynamo origin of the magnetic fields of Jupiter and other major planets and its implications for their internal structure and dynamics. His extensive research on fluctuations of the Earth's rotation led to new developments in areas as diverse as meteorology and climatology and studies of the structure and dynamics of the Earth's deep interior.

Nucleosome dynamics

2006 ◽  
Vol 73 ◽  
pp. 109-119 ◽  
Author(s):  
Chris Stockdale ◽  
Michael Bruno ◽  
Helder Ferreira ◽  
Elisa Garcia-Wilson ◽  
Nicola Wiechens ◽  
...  
Keyword(s):  
High Resolution ◽  
Chromatin Structure ◽  
Current Knowledge ◽  
Dynamic Properties ◽  
Structure And Dynamics ◽  
Nucleosome Dynamics ◽  
Sharp Focus ◽  
Recent Advances ◽  
Insight Into ◽  
Chromatin Structure And Dynamics

In the 30 years since the discovery of the nucleosome, our picture of it has come into sharp focus. The recent high-resolution structures have provided a wealth of insight into the function of the nucleosome, but they are inherently static. Our current knowledge of how nucleosomes can be reconfigured dynamically is at a much earlier stage. Here, recent advances in the understanding of chromatin structure and dynamics are highlighted. The ways in which different modes of nucleosome reconfiguration are likely to influence each other are discussed, and some of the factors likely to regulate the dynamic properties of nucleosomes are considered.

Structure and dynamics of phosphate glasses

1998 ◽  
Vol 77 (2) ◽  
pp. 357-362 ◽  
Author(s):  
A. Matic, L. Borjesson
Keyword(s):  
Phosphate Glasses ◽  
Structure And Dynamics

Studies of the structure and dynamics of theDregion of the polar ionosphere during solar flares in April 2004

2006 ◽  
Vol 6 (2) ◽  
Author(s):  
V. D. Tereshchenko ◽  
E. B. Vasil'ev ◽  
O. F. Ogloblina ◽  
V. A. Tereshchenko ◽  
S. M. Chernyakov
Keyword(s):  
Solar Flares ◽  
Polar Ionosphere ◽  
Structure And Dynamics

ІНТЕРПРЕТАЦІЯ КАТЕГОРІЇ РОЗВИТКУ В СУЧАСНІЙ ПСИХОЛОГІЇ

1970 ◽  
Vol 8 (1) ◽  
pp. 22-30
Author(s):  
Анжеліка Шамне
Keyword(s):  
Cultural Context ◽  
Developmental Psychology ◽  
Structure And Dynamics ◽  
Modern Psychology ◽  
Development Site ◽  
Approaches To Study ◽  
Methodological Approaches ◽  
Self Motion

У статті розглянуто сучасні підходи до інтерпретації категорії розвитку, розкрито теоретичні  та методологічні підходи до вивчення категорії розвитку у сучасній психології, визначено її психологічний  зміст,   моделі,   структуру   та   динаміку.   Категорія   розвитку   розглядається   як   епіцентр   наукової  проблематики у психології та як поняття інтегративного типу. Розвиток проаналізовано як категорію,  явище і проблему психології розвитку в різних аспектах аналізу. Розглянуто місце розвитку в системі  споріднених психологічних понять. У статті також аналізуються психологічні аспекти теоретичних та  методологічних  постнекласичних  тенденцій  вивчення  природи,  характеру  та  визначення  психічного  розвитку. Постнекласична парадигма та плюралістична методологія пізнання визначають розмитість  дисциплінарної мови  та  врахування  ролі  соціокультурного  контексту  при  вивченні  психологічних явищ.  Важливими тенденціями сучасного теоретико-методологічного стану психологічних досліджень розвитку  також є визнання неефективності моністичного підходу до його вивчення, взаємозв'язок теоретичних ідей  та   спроби   створення   метатеоретичних   схем,   постнекласичне   розуміння   розвитку   як   принципово  незавершеного   процесу   саморуху,   актуалізація   антропологічного   діапазону   проблем   та   посилення  спрямованості на роль культурного контексту в дослідженні розвитку людини.  The article deals with the modern approaches to the interpretation of the category of development, reveals  the theoretical and methodological approaches to study of development in modern psychology, its psychological  content, patterns, structure and dynamics. Category of development is viewed as an epicenter of scientific issues in  modern  psychology  and  the  concept  of  the  integrative  type.  Category  of  development  is  considered  as  the  phenomenon  and  the  problem  of  developmental  psychology  in  various  aspects  of  the  analysis.  Analyzed  the  development site in the related psychological concepts. The article analyzes the psychological aspects of theoretical  and methodological postnonclassical contemporary trends in the study of nature, character, and determination of  mental  development.  Postnonclassical  paradigm  and  pluralistic  methodology  of  knowledge  determine  the  disciplinary blurring and increase of the role of the analysis of socio-cultural context in the study of psychological  phenomenon. The important tendencies of modern theoretical and methodological state of psychological researches  of development are facts of inefficiency of the monistic approach to its study, interconnection of theoretical ideas  and   attempts   of  creating   metatheoretical   schemes,   postnonclassical   understanding   of   development   as   a  fundamentally  uncompleted  process  of  self-motion,  actualization  of  anthropological  range  of  problems  and  strengthening of focus on the role of cultural context in research of human development.   

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