1 / 7

CALIFORNIA’S STORM HAZARDS

CALIFORNIA’S STORM HAZARDS. MUDFLOWS - A mudflow often starts in a depression on a steep hillside. At first, a mudflow moves fairly slowly-about 16 kilometers per hour. But as the mud engulfs more and more loose debris, it picks up speed.

rania
Télécharger la présentation

CALIFORNIA’S STORM HAZARDS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CALIFORNIA’S STORM HAZARDS • MUDFLOWS- • A mudflow often starts in a depression on a steep hillside. • At first, a mudflow moves fairly slowly-about 16 kilometers per hour. • But as the mud engulfs more and more loose debris, it picks up speed. • At top speed, a mudflow can move nearly 60 kilometers per hour, destroying everything in its path. • FLOODING- • Flooding Is another California storm hazard. • Some of the state’s floods are regional floods. • Some flooding in California occurs when excessive rainfall causes dams and levees to fail.

  2. CALIFORNIA’S EARTHQUAKE HAZARDS • TSNUNAMIS – • Is a wave formed when the ocean floor shifts suddenly during an earthquake. • As a Tsunami nears land and begins to break, the Tsunami can grow to enormous size. • A Tsunami gains speed as it gets closer to land • A Tsunami acts like a wall of water • SIESMIC SHAKING – • Is a measure of how much ground movement occurs during an earthquake. • Seismic Shaking reflects the behavior of an earthquake’s seismic waves. • Can cause buildings, freeways and structures to collapse

  3. CALIFORNIA’S EARTHQUAKE HAZARDS • LIQUEFACTION – • Occurs when water-soaked soil turns to a thick, soupy liquid during an earthquake • As liquefaction takes place, buildings and other structures quickly collapse into soft mud.

  4. CALIFORNIA’S EARTHQUAKE HAZARDS • LANDSLIDES – • Occur on steep slopes where sediment is loose or where rocks are highly fractured. • Earthquakes can also cause landslides in areas that are underlain by weak soils.

  5. CALIFORNIA’S VOLCANIC HAZARDS • VOLCANIC ASH – • the dust that comes off the burning rock of the volcano. • Can be harmful to plant, animal and human respiratory system • Can block incoming solar radiation that is needed to survive

  6. CALIFORNIA’S VOLCANIC HAZARDS • LAVA FLOWS – • Lava flow is produced when lava breaks through the surface of a volcano and starts to travel down the sides. • Lava flows can destroy whole villages and help create new land masses.

  7. CALIFORNIA’S VOLCANIC HAZARDS • VOLCANIC GASES- • Magmatic gases and high-temperature volcanic gases, • Low-temperature volcanic gases and hydrothermal systems, • Non-explosive volcanic gas release

More Related