Chapter 6 - Volcanic Eruptions: Plate Tectonics and Magmas
How We Understand Volcanic Eruptions
Plate-Tectonic Setting of Volcanoes
Chemical and Mineral Composition of Magmas
Viscosity, Temperature and Water Content of Magmas
Plate-Tectonic Setting of Volcanoes Revisited
How a Volcano Erupts
Some Volcanic Materials
Nonexplosive Eruptions
Explosive Eruptions
Volcanic Landforms and Eruption Styles
Shield Volcanoes: Low Viscosity, Low Volatiles, Large Volume
Hawaiian-type Eruptions
Killer Event of 1790
Flood Basalts: Low Viscosity, Low Volatiles, Very Large Volume
Scoria Cones: Low Viscosity, Medium Volatiles, Small Volume
Strombolian-type Eruptions
Stratovolcanoes: High Viscosity, High Volatiles, Large Volume
Vulcanian-type Eruptions
Plinian-type Eruptions
Vesuvius, 79 C.E.
Lava Domes: High Viscosity, Low Volatiles, Small Volume
Calderas: High Viscosity, High Volatiles, Very Large Volume
Crater Lake (Mount Mazama), Oregon
Krakatau, Indonesia, 1883
Santorini and the Lost Continent of Atlantis
Resurgent Calderas
Yellowstone National Park
Eruptive Sequence of a Resurgent Caldera
Chapter 7 - Volcanic Eruptions Continue
Volcanism at Spreading Centers
Iceland
Icelandic-type Eruptions
Lava Flows of 1973
Jokulhlaup of 1996
Volcanism at Subduction Zones
Cascade Range, Pacific Coast United States and Canada
Mount St. Helens, Washington, 1980
Lassen Peak, California, 1914-17
Mount Shasta, California
Killer Events and Processes
The Historic Record of Volcano Fatalities
Pyroclastic Flows
Mount Mayon, Philippines, 1968
El Chichon, Mexico, 1982
Mount Unzen, Japan, 1991
Mont Pelee, 1902-1903, 1929-1932
Mont Pelee, Martinique, 1902
Krakatau, Indonesia 1883
Tsunami
Mt. Unzen, Japan 1792
Lahars
Kelut, Indonesia, 1586, 1919
Nevado Del Ruiz, Colombia, 1985
Mount Rainier, Washington - On alert
Indirect - Famine
Laki, Iceland Fissure Eruption of 1783
Tambora, Indonesia, 1815
Gas
Killer Lakes of Cameroon, Africa
Lava Flows
Nyiragongo, Zaire 2002
VEIs of Some Killer Eruptions
Volcano Monitoring and Warning
Long Valley, California, 1982
Mount Pinatubo, Philippines, 1991
Chapter 8 - Mass Movements
The Role of Gravity
Creep
External Causes of Slope Failures
Internal Causes of Slope Failures
Inherently Weak Materials
Canadian Quick-Clay Slope Failures
Water in Its Different Roles
Decreases in Cohesion
Adverse Geologic Structures
Triggers of Mass Movements
Classification of Mass Movements
Falls
Yosemite National Park, California
Slides
Rotational Slides
Ensenada, Baja California
Translational Slides
Point Ferman, California
Vaiont, Italy, 1963
Gros Ventre, Wyoming, 1925
Turnagain Heights, Anchorage, Alaska, 1964
Flows
Gansu Province, China, Loess Flow
Portuguese Bend, California, Earthflow
Long-Runout Debris Flows
Blackhawk Event, California
Elm Event, Switzerland, 1881
Turtle Mountain, Alberta, Canada, 1903
Movement of Highly Fluidized Rock Flows (Sturzstroms)
Nevados Huascaran Events, Peru
Snow Avalanches
Submarine Mass Movements
Subsidence
Slow Subsidence
Delta Compaction, Mississippi River, Louisiana
Oil Withdrawal, Houston-Galveston Region, Texas
Groundwater Withdrawal, Mexico City
Catastrophic Subsidence
Limestone Sinkholes, Southeastern United States
Chapter 9 - Climate Change
Climate
Early Earth Climate - A Runaway Greenhouse
Climate History of the Earth: Time Scale in Millions of Years
Late Paleozoic Ice Age
Late Paleocene Torrid Age
Late Cenozoic Ice Age
The Last 3 Million Years
Glacial Advance and Retreat: Time Scale in Thousands of Years
Climate Variations: Time Scale in Hundreds of Years
The Last Thousand Years
Shorter-Term Climatic Changes: Time Scale in Multiyears
El Nino
La Nina
Volcanism and Climate
El Chicon, 1982
Mount Pinatubo, 1991
Tambora, 1815
Toba, Indonesia, ~ 74,000 years ago
Volcanic Climate Effects
Drought and Famine
U.S. Dust Bowl, 1930s
Sub-Sahelian Africa, 1968-1975
The Twentieth and Twenty-First Centuries
The Greenhouse Effect Today
Carbon Dioxide (CO2)
Methane (CH4)
Nitrous Oxide (N2O)
Ozone (O3)
Chlorofluorocarbons (CFCs)
Twentieth Century Greenhouse Gas Increases
The Twenty First Century
Chapter 10 - Severe Weather
Weather Principles
Water and Heat
Atmospheric Heating
Coriolis Effect
The Merry-Go-Round Analogy
Global Wind Pattern
Jet Streams
Air Masses
Fronts
Rotating Air Bodies
Midlatitude Cyclones
The Eastern U.S. "White Hurricane" of 1993
Blizzards
Northeastern United States, 6-8 January 1996
Ice Storms
Canadian Ice Storm, 5-9 January 1998
How a Thunderstorm Works
Microbursts: An Airplane's Enemy
Thunderstorms in the Conterminous United States
Heavy Rains and Flash Floods
Central Texas
Hail
Lightning
How Lightning Works
Don't Get Stuck
Winds
Straight-line Winds
Ontario to New York Derecho, 15 July 1995
Tornadoes
Tri-State Tornado, 18 March 1925
How a Tornado Works
Tornadoes in the United States and Canada
The Super Outbreak, 3-4 April 1974
Tornadoes and Cities
Safe Rooms
Extreme Heat
Heat Wave
Heat Wave in Chicago, July 1995
Chapter 11 - Hurricanes and the Coastline
Hurricanes
Andrew, August 1992
How a Hurricane Works
Hurricane Energy Release
The Eye
Hurricane Origins
North Atlantic Ocean Hurricanes
Cape Verde-type Hurricanes
Hurricane Paths
Caribbean Sea and Gulf of Mexico-type Hurricanes
Mitch, October 1998
Forecasting the Hurricane Season
Hurricane Damages
Storm Surges
Heavy Rains
Nelson County, Virginia, 1969, Mudflows and Debris Avalanches
Hurricanes and the Gulf of Mexico Coastline
Galveston, Texas, September 1900
Gulf of Mexico Coast Example: Texas
Hurricanes and the Atlantic Coastline
Hugo, September 1989
The Evacuation Dilemma
Reduction of Hurricane Damages
Building Codes
Roofs
Impact of Wind-borne Debris
Land-Use Planning
Coastal Development Restrictions
Global Rise in Sea Level
Hurricanes and the Pacific Coastline
Pauline, October 1997
Iniki, September 1992
Cyclones and Bangladesh
Coastline
Waves in Water
Rogue Waves
Waves on the Coastline
Why a Wave Breaks
Summer Versus Winter Beaches
Beach Sand as Coastal Protection
Wave Refraction
Longshore Drift
Submarine Canyons
Human Effects on the Coast
Dams
Cliff Protection
Groins
Jetties
Mission Bay, San Diego, California
Breakwaters
Chapter 12 - Floods
Floods
How Rivers and Streams Work
Longitudinal Cross Section of a Stream
The Equilibrium Stream
Case 1 - Too Much Discharge
Case 2 - Too Much Load
Graded Stream Theory
The Floodplain
Flood Frequency
Flood Styles
Flash Floods
Antelope Canyon, Arizona, 1997
Big Thompson Canyon, Colorado, 1976
Rapid Creek, Black Hills, South Dakota, 1972
Regional Floods
Red River of the North
Mississippi River System
Some Historic Floods
The Great Midwestern Flood of 1993
Weather Conditions
Role of Levees
China
Societal Responses to Flood Hazards
Dams
Levees
Sandbagging
Forecasting
Zoning and Land Use
Insurance
Presidential Disaster Declarations
Urbanization and Floods
Hydrographs
Flood Frequencies
Channelization
The Extreme Approach: Los Angeles
The Binational Approach: Tijuana and San Diego
The Uncoordinated Approach: San Diego
The Hit-and-Miss Approach: Tucson
The Biggest Floods
Ancient Tales of Deluge
Black Sea Deluge
Ice-Dam Failure Floods
Chapter 13 - Fire
What Is Fire?
The Need for Fire
The Fire Triangle
Fuel Categories
The Stages of Fire
The Spread of Fire
Fuel
Wind
Topography
Fire Behavior
Fire Weather
Winds of Fire
Cold-front Winds
Foehn Winds
Local Winds
Great Lakes Region
Peshtigo, Wisconsin
Chicago, Illinois
California
Oakland and Berkeley Hills
Southern California
Home Style and Fire
Fire Suppression
Yellowstone National Park
Ten Years Later
California versus Baja California: Pay Now or Pay Later
The Western and Southern United States In 2000
La Nina
Prescribed Fires
Los Alamos, New Mexico, May 2000
Australia
The Similarities of Fire and Flood
Chapter 14 - The Great Dyings
Early Understanding of Extinctions and Geologic Time
Brief History of Life
Species and the Fossil Record
The Tropical Reef Example
Mass Extinctions During Phanerozoic Time
Possible Causes of Mass Extinctions
Plate-Tectonic Causes
Changes in Seafloor Spreading Rates
Sea-Level Changes
Numbers and Sizes of Continents
Continental Position and Glaciation
Volcanic Causes
Changes in Atmospheric Composition
Climate Change Causes
Ocean Composition Causes
Extraterrestrial Causes
Biologic Causes
Species-Area Effects
Random Extinction
Predation and Epidemic Disease
Multiple Causes of Mass Extinction
Examples of Mass Extinctions
Closing of Permian Time (Ended 251 Million Years Ago)
Formation of the Supercontinent Pangaea
Sea-Level Fall
Climate Changes
Ocean Composition Changes
Siberian Traps Flood Basalt
Duration of the Extinction Events
Life at the End of Permian Time
Close of Cretaceous Time (Ended 65 Million Years Ago)
Sea-Level Fall
Deccan Traps Flood Basalt
Chicxulub Impact
Quaternary Extinctions
Chapter 15 - Impacts with Space Objects
Impact Scars
Sources of Extraterrestrial Debris
Asteroids
Comets
Rates of Meteoroid Influx
Cosmic Dust
Shooting Stars
Meteorites
Crater-Forming Impacts
Meteor Crater, Arizona
The Cretaceous/Tertiary Boundary Event
Evidence of the K/T Impact
Site of the K/T Impact
Angle of Impact
Problems for Life from Impacts
The Crater-Forming Process
Impact Origin of Chesapeake Bay
Biggest Event of the Twentieth Century
Tunguska, Siberia, 1908
Biggest "Near Events" of the Twentieth Century
Frequency of Large Impacts
A Defense Plan
Chapter 16 - Population Growth
Overview of Human Population History
The Power of an Exponent on Growth
The Last 10,000 Years of Human History
The Human Population Today
Carrying Capacity
Easter Island (Rapa Nui)
Demographic Transition Model
Population History of Mesopotamia
World Population Data
Future World Population
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