VOLCANIC HAZARDS

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CHAPTER 7 - SAFETY AND HEALTH AT WORK

von syazwina azmi

branches of gegraphy

von Austin Evans

Reading objectives_Managing crowds at stations

von Qin Gao

Steps of a Risk Assessment

von Sebastien Delhove

VOLCANIC HAZARDS

LAHARS

can reach 60-70 c

It has tecture of concreate

Are volcanic mud flows

pyroclastic flows

It's very hot and can crush buildings

Can run down volcanoes at speeds of 1000km/hr

can reach 400 c

It's made of ash, rock and gas

Ash colums fall

Floods

Will only be made in snowy terrains since floods are made because of the snow/ice melting

LAVA

lava can also make floods

lava can bury entire villages

Other types of lava are pahoihoi and 'A'a

A type of lava called basalt can reach speeds of 10km/hr

Can reach tempretures of 2000 c

Ash

of there's too much it it can block sunlight

Can causes problems with farming

Tephra causes clogs in egines

Toxic gases

types of eruption

plinian

Pelean

Vulcanian

Stromblolian

Hawaiin

Icelanic