Forced nutations of the Earth: Influence of inner core dynamics: 3. Very long interferometry data analysis

1991 ◽  
Vol 96 (B5) ◽  
pp. 8259 ◽  
Author(s):  
Thomas A. Herring ◽  
Bruce A. Buffett ◽  
P. M. Mathews ◽  
Irwin I. Shapiro
Keyword(s):  
Data Analysis ◽  
Inner Core ◽  
The Earth ◽  
Core Dynamics

Forced nutations of the Earth: Influence of inner core dynamics: 2. Numerical results and comparisons

1991 ◽  
Vol 96 (B5) ◽  
pp. 8243 ◽  
Author(s):  
P. M. Mathews ◽  
B. A. Buffett ◽  
T. A. Herring ◽  
I. I. Shapiro
Keyword(s):  
Inner Core ◽  
Numerical Results ◽  
The Earth ◽  
Core Dynamics

Forced nutations of the Earth: Influence of inner core dynamics: 1. Theory

1991 ◽  
Vol 96 (B5) ◽  
pp. 8219 ◽  
Author(s):  
P. M. Mathews ◽  
B. A. Buffett ◽  
T. A. Herring ◽  
I. I. Shapiro
Keyword(s):  
Inner Core ◽  
The Earth ◽  
Core Dynamics

Ups and Downs

2018 ◽  
Author(s):  
Roy Livermore
Keyword(s):  
Mantle Convection ◽  
Laboratory Experiments ◽  
Inner Core ◽  
Computer Modelling ◽  
Great Depth ◽  
New Horizons ◽  
The Core ◽  
The Earth ◽  
The World ◽  
The 1960S

Despite the dumbing-down of education in recent years, it would be unusual to find a ten-year-old who could not name the major continents on a map of the world. Yet how many adults have the faintest idea of the structures that exist within the Earth? Understandably, knowledge is limited by the fact that the Earth’s interior is less accessible than the surface of Pluto, mapped in 2016 by the NASA New Horizons spacecraft. Indeed, Pluto, 7.5 billion kilometres from Earth, was discovered six years earlier than the similar-sized inner core of our planet. Fortunately, modern seismic techniques enable us to image the mantle right down to the core, while laboratory experiments simulating the pressures and temperatures at great depth, combined with computer modelling of mantle convection, help identify its mineral and chemical composition. The results are providing the most rapid advances in our understanding of how this planet works since the great revolution of the 1960s.

Free spheroidal vibrations of the earth at very long periods, Part I— Calculation of periods for several earth models

1963 ◽  
Vol 53 (3) ◽  
pp. 483-501 ◽  
Author(s):  
Leonard E. Alsop
Keyword(s):  
Inner Core ◽  
Computer Programs ◽  
Free Vibrations ◽  
Stoneley Waves ◽  
The Core ◽  
The Earth ◽  
Earth Models ◽  
Shear Modes ◽  
Phase And Group Velocities ◽  
Group Velocities

Abstract Periods of free vibrations of the spheroidal type have been calculated numerically on an IBM 7090 for the fundamental and first two shear modes for periods greater than about two hundred seconds. Calculations were made for four different earth models. Phase and group velocities were also computed and are tabulated herein for the first two shear modes. The behavior of particle motions for different modes is discussed. In particular, particle motions for the two shear modes indicate that they behave in some period ranges like Stoneley waves tied to the core-mantle interface. Calculations have been made also for a model which presumes a solid inner core and will be discussed in Part II. The two computer programs which were made for these calculations are described briefly.

scholarly journals Matahari dalam Perspektif Sains dan Al-Qur'an

2019 ◽  
Vol 2 (1) ◽  
pp. 27-35
Author(s):  
Anisa Nur Afida ◽  
Yuberti Yuberti ◽  
Mukarramah Mustari
Keyword(s):  
Qualitative Research ◽  
Data Analysis ◽  
Solar System ◽  
Data Model ◽  
Research Method ◽  
The Sun ◽  
Data Display ◽  
The Earth ◽  
Library Research ◽  
Analysis Technique

Abstract: This study aims to determine the function of the sun in the perspective of science and al-Qur'an . The research method used is qualitative research methods with the type of research library (Library Research). This research applies data analysis technique of Milles and Huberman model, with steps: 1) data reduction; 2) data display; 3) verification. The result of this research is, the theories that science explain related to the function of the sun in accordance with what is also described in the Qur'an. Science explains that the sun as the greatest source of light for the earth can produce its own energy. This is explained in the Qur'an that the sun is described as siraj and dhiya' which means sunlight is sourced from itself, as the center of the solar system is not static but also moves this matter in the Qur'an explained in QS Yāsin verse 38, besides science and the Qur'an also equally explain that the sun can be made as a calculation of time.Abstrak: Penelitian ini bertujuan untuk mengetahui fungsi matahari dalam perspektif sains dan al-Qur’an..Metode penelitian yang digunakan yaitu metode penelitian kualitatif dengan jenis penelitian pustaka (Library Research). Penelitian ini menggunakan teknik analisis data model Milles dan Huberman, dengan langkah-langkah: 1) reduksi data; 2) display data; 3) verifikasi. Hasil dari penelitian ini yaitu, teori-teori yang sains jelaskan berkaitan dengan fungsi matahari sesuai dengan apa yang juga di jelaskan dalam al-Qur’an. Sains menjelaskan bahwa matahari sebagai sumber energi cahaya terbesar bagi bumi dapat menghasilkan energinya sendiri hal ini dijelaskan dalam al-Qur’an bahwa matahari dideskripsikan sebagai siraj dan dhiya’yang berarti sinar matahari bersumber dari dirinya sendiri, sebagai pusat tata surya matahari tidaklah statis melainkan juga bergerak hal ini dalam al-Qur’an di jelaskan dalam QS Yāsin ayat 38, selain itu sains dan al-Qur’an juga sama-sama menjelaskan bahwa matahari  dapat di jadikan sebagai perhitungan waktu serta petunjuk dari bayang-bayang.

scholarly journals LARGE AREA HODOSCOPES FOR MUON DIAGNOSTICS OF HELIOSPHERE AND EARTH’S MAGNETOSPHERE

2013 ◽  
Vol 53 (A) ◽  
pp. 807-810
Author(s):  
I. I. Yashin ◽  
N. V. Ampilogov ◽  
I.I. Astapov ◽  
N.S. Barbashina ◽  
V.V. Borog ◽  
...  
Keyword(s):  
Data Analysis ◽  
Real Time ◽  
Remote Monitoring ◽  
Angular Resolution ◽  
Muon Flux ◽  
Large Area ◽  
Real Time Mode ◽  
The Earth ◽  
Muon Hodoscope ◽  
Active Processes

Muon diagnostics is a technique for remote monitoring of active processes in the heliosphere and the magnetosphere of the Earth based on the analysis of angular variations of muon flux simultaneously detected from all directions of the upper hemisphere. To carry out muon diagnostics, special detectors – muon hodoscopes – which can detect muons from any direction with good angular resolution in real-time mode are required. We discuss approaches to data analysis and the results of studies of various extra-terrestrial processes detected by means of the wide aperture URAGAN muon hodoscope.

scholarly journals A Bayesian Approach to the Use of 14C Dates in the Estimation of the Age of Peat

Radiocarbon ◽  
1995 ◽  
Vol 37 (2) ◽  
pp. 431-441 ◽  
Author(s):  
J. A. Christen ◽  
R. S. Clymo ◽  
C. D. Litton
Keyword(s):  
Data Analysis ◽  
Mathematical Models ◽  
Bayesian Approach ◽  
Land Surface ◽  
Lower Layer ◽  
Decay Rates ◽  
The Earth ◽  
Cumulative Mass ◽  
Carbon Store ◽  
The Bayesian Approach

Peatlands occupy a significant portion of the land surface of the Earth and form a large carbon store. Most peat-forming systems have two layers. The upper layer, the acrotelm, fixes carbon by photosynthesis, loses some of it by decay and passes the remainder on to the lower layer, the catotelm. In the catotelm, decay continues at a slower rate. Mathematical models of the growth of the catotelm have been proposed which relate the cumulative mass of peat above a particular depth to calendar age of the peat at that depth. We demonstrate how 14C dating and the Bayesian approach to data analysis can be used to make inferences about the relation between calendar age and cumulative mass, and to estimate the accumulation and decay rates.

Sign in / Sign up

Export Citation Format

Share Document