Module 4 the earth's dynamics
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Transcript of Module 4 the earth's dynamics
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Module 4Module 4
Earth’s DynamicsEarth’s Dynamics
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BUMI DALAM TATASURYA
• Matahari dan planet-planetnya
• Anatomi bumi
• Dinamika bumi
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EARTH DYNAMICS
• Rotation and revolution of planets• Heat (from solar and Earth’s mantle)• Gravity force• Electro-magnet
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EARTH’S orbit around the Sun
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Distributian of day and night; and climate along year
Solstice: Titik balik matahariEquinox: Waktu siang dan malam sama lama
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Energy budget
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mW m-2
Heat Flow (Internal Source)
0 40 60 85 120 180 240 350
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(Hamblin & Christiansen, 2009)
The Sun’s energy on Earth
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Winds circulation
(Hamblin & Christiansen, 2009)
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Winds circulation
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The Formation of Syclones dan anticyclones
A. Jet stream begins to undulate
B. Rossby waves begin to form
C. Waves strongly developed
D. Cells of cold and warm air bodies are formed
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Spiral clouds
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Water Cycle
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How does water move among reservoirs?
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Ocean Currents• Redistribute heat across planet
(Hamblin & Christiansen, 2009)
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Deep ocean currents
(Hamblin & Christiansen, 2009)
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Weather and ClimateWeather and Climate
What is weather? What is weather?
What is climate? What is climate?
How do they differ?How do they differ?
• WeatherWeather is the short-term state of the atmosphere is the short-term state of the atmosphere at a particular place at any given timeat a particular place at any given time
• ClimateClimate is a long-term composite of weather is a long-term composite of weather conditions at a particular placeconditions at a particular place
• Short term versus long term---that is how they Short term versus long term---that is how they differdiffer
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World Climate
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PLATE MOTIONMantle convection provides
the primary drive forplate tectonics
What drives plate motions?
MODELS:A. Layering at 660 kilometers ModelB. Whole Mantle Convection Model
C. Deep-layer Model
Whole Mantle
Deep Layer
Layering
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What drives plate motions
• Forces that drive plate motion
SLAB PULLCold, dense slabs of subducted oceanic lithosphere pull the plate towards the subduction zone
MANTLE DRAG and PLATE RESISTANCECan act to increase or decrease plate motion
RIDGE-PUSH• The higher elevation of spreading centers result in oceanic
lithosphere wanting to move “downhill”, away from the ridge• Far less important than slab-pull
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3 plate interactions: Divergent
ConvergentTransform
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Morphology of the ocean (oceanic basins)Morphology of the ocean (oceanic basins)
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Landforms & Surface Processes
• Glaciers• Mass Wasting
• Streams
• Shorelines
• Deserts
• Groundwaterhttp://www.berann.com
H.C. Berann (1915-1999) Yosemite National Park, 1987