• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
2-Unit4Part2EarthsInteriors
2-Unit4Part2EarthsInteriors

... 3. L-waves (Long waves or Love Waves) • Surface waves that cause horizontal shearing of the ground – Travel on the surface of the earth and shake rocks sideways as they move across the surface – Generated by the epicenter – Particles travel in a rolling motion ...
Earth`s Interior Information- Core-Innermost layer Inner Core
Earth`s Interior Information- Core-Innermost layer Inner Core

... Quick Facts Evidence for Earth’s interior comes from seismic data.  Earth’s layers are separated by density.  Radioactive decay in the core is thought to be the cause of heat that provides energy for convection.  Convection currents in the asthenosphere of the mantle cause the lithosphere plates ...
Earthquake Notes
Earthquake Notes

... Intraplate quakes occur far from plate edges and happen when stress builds up and the Earth's crust is stretched or squeezed together until it rips. ...
Plate Tectonics
Plate Tectonics

... from the same earthquake arrive at 1:26:20. What is the distance from the epicenter to the seismic station? 2800 km ...
Earthquake Vocabulary - Garnet Valley School District
Earthquake Vocabulary - Garnet Valley School District

... Aftershock An earthquake that occurs after a ...
Chapter 4
Chapter 4

... – If greenhouse gas concentrations rise, they trap more heat, so Earth warms. If their concentrations fall, more heat escapes, and Earth cools. – Without the greenhouse effect, Earth would be about 30°C cooler than it is today. ...
Chapter 4
Chapter 4

... – If greenhouse gas concentrations rise, they trap more heat, so Earth warms. If their concentrations fall, more heat escapes, and Earth cools. – Without the greenhouse effect, Earth would be about 30°C cooler than it is today. ...
The solar dynamo(s) - Center for Magnetic Self Organization
The solar dynamo(s) - Center for Magnetic Self Organization

... Any three-dimensional, turbulent (chaotic) flow with high magnetic Reynolds number is (extremely) likely to be a dynamo. • Reflectionally symmetric flows: – Small-scale dynamo action – Disordered fields; same correlation length/time as turbulence ...
Acoustic Waves - The Evergreen State College
Acoustic Waves - The Evergreen State College

... permeability and ρ is the mass density. Magnetosonic waves are longitudinal magnetic waves; they travel across magnetic field lines and cause perturbations to the magnetic pressure. Both Alfvén and magnetosonic waves have been observed in the ionosphere during geomagnetic storms caused by CMEs4. ...
Vocab-Chapter 8
Vocab-Chapter 8

... Seismogram ...
Spheromaks, solar prominences, and Alfvén instability of current
Spheromaks, solar prominences, and Alfvén instability of current

... Observational evidence points to some kind of collisionless reconnection process which similarly feeds on λ gradients and flattens these gradients but at a much faster rate than resistive reconnection. Controversy exists on whether these collisionless processes are continuous or transient; either si ...
Today`s Warm-Up Friday, January 10
Today`s Warm-Up Friday, January 10

... (crust and upper mantle) • Asthenosphere: solid, plastic, convection currents (middle mantle) • Mesosphere: solid, rigid (lower mantle) ...
Grade 8 Science
Grade 8 Science

... 3. Ocean Science Centre 4. Centre for Cold Ocean Research (C-CORE at MUN) ...
magnetic stripes
magnetic stripes

... approximately 400 km altitude. Warm colors (reds) indicate the strongest magnetizations while cool colors (blues) the weakest (Purucker et al., 1997). The strongest anomalies-few nT, are observed in continental areas, and the ratio of crustal anomalies to main magnetic ‘field’ is in the range of 10- ...
Inside the Earth
Inside the Earth

... A earthquake is a movement or vibration of the earth. They are caused by the release of stored energy in earths outer layer.This release of energy causes sudden shifts of rocks along faults ...
solar photosphere and chromosphere
solar photosphere and chromosphere

... Figure 2: Run of Slu /Bν (T) with optical depth (at line center) in an atmosphere with constant properties. Solid curves: Gaussian apsortion profiles; dash-dotted: ε = 10−4 and normalized Voigt profile with damping constant a = 0.01. • Slu  Bν (T) near surface, photons escape from deep layers, ⇒ J¯ ...
Blank Jeopardy - Fort Thomas Independent Schools
Blank Jeopardy - Fort Thomas Independent Schools

... 1 PT ...
Grade 8 Chapter 2 : Notes
Grade 8 Chapter 2 : Notes

... 3. Ocean Science Centre 4. Centre for Cold Ocean Research (C-CORE at MUN) ...
Napoleon - Kawameeh Middle School
Napoleon - Kawameeh Middle School

... conditions, along with short-term changes, of a certain place at a certain time. ...
Chapter 2 - TeacherWeb
Chapter 2 - TeacherWeb

... 3. Ocean Science Centre 4. Centre for Cold Ocean Research (C-CORE at MUN) ...
Document
Document

... while the axis of the fold is any line on the bed which is parallel to the hinge line. When the axis is inclined to the horizontal, the fold is said to plunge. Axial surfaces are vertical in upright folds, while surfaces dip at varying angles and are sub horizontal in recumbent folds. In the latter, ...
Lecture 2/10 The Sun Ulf Torkelsson 1 The internal structure of the
Lecture 2/10 The Sun Ulf Torkelsson 1 The internal structure of the

... suppressing the convection beneath the sun spot, so that it receives less heat than other parts of the solar photosphere. Sunspots typically occur in groups. The western and eastern ends of the sunspot group usually have the opposite magnetic polarities. At any time one will find that all sunspot gr ...
Chapter 19
Chapter 19

... • Slow moving seismic waves • Love waves are surface waves that cause rock to move side-to-side and perpendicular to the direction of the wave. • Rayleigh waves are surface waves cause the ground to move with an elliptical, rolling ...
stressed out vocab answer key
stressed out vocab answer key

... Boundary: the border between two plates. Convergent Boundary: a boundary where two plates push towards each other. Divergent Boundary: a boundary where two plates are moving apart from each other. Transform Boundary: a boundary where plates move past each other. Fault: a crack or fracture in the ear ...
Chapter 8
Chapter 8

... • Seismic Waves – Waves of energy that travel through the earth ...
< 1 ... 25 26 27 28 29 30 31 32 33 35 >

Ionospheric dynamo region

In the height region between about 85 and 200 km altitude on Earth, the ionospheric plasma is electrically conducting. Atmospheric tidal winds due to differential solar heating or due to gravitational lunar forcing move the ionospheric plasma against the geomagnetic field lines thus generating electric fields and currents just like a dynamo coil moving against magnetic field lines. That region is therefore called ionospheric dynamo region. The magnetic manifestation of these electric currents on the ground can be observed during magnetospheric quiet conditions. They are called Sq-variations (S=solar; q=quiet) and L-variations (L=lunar) of the geomagnetic field.Additional electric currents are generated by the varying magnetospheric electric convection field. These are the DP1-currents (the auroral electrojets) and the polar DP2-currents. Finally, a polar-ring current has been derived from the observations which depends on the polarity of the interplanetary magnetic field. These geomagnetic variations belong to the so-called external part of the geomagnetic field. Their amplitudes reach at most about 1% of the main internal geomagnetic field Bo.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report