hazards n stuff

Neolithic Period (4200-2500 yrs ago)

Domesticating plants and animals and crafting better tools

Dynamic interplay between humans and environment

Austronesian-speaking

New Stone Age

Hydrometeorological Hazards

accidents by atmospheric, hydrological, or oceanographic nature

Western Pacific Basin

Most Active Tropical Cyclone Basin

Intertropical Convergence Zone (ITCZ)

Trade winds from North Hem n South Hem bring tropical air masses together

Formation of convective clouds and heavy precipitation

Typhoon

Revolves around low-pressure area

“Tai Fung” Ta big, Fung wind

“Bagyo”

Cyclone Classifications

Trop Depres - 61 kph

Trop Storm - 62 to 88 kph

Severe Trop Storm - 89 to 117 kph

Typhoon - 118 to 220 kph

Super Typhoon - >220 kph

Observance for DO 37

Cancellation of Public Schools

Thunderstorm

Lightning and Thunder

Formation of Thunderstorm

1. Moisture

2. Rapid rising mass of warm air

3. Updraft to force moisture higher

Flood

excessive water

Storm Surge

“Daluyong ng Bagyo”

drop in atmospheric pressure and strong winds

ABNORMAL SEAWATER LEVEL RISE

El Nino

“Christ Child” Unusual warming of ocean waters

Dry

La Nina

“The Girl” unusual cooling of sea

wet

Landslide

downard movement of soil

southwest monsoons (habagat)

sinkholes

depressions or holes”

“karst terrains” - area where soil can easily be dissolved

Translational Landslide

along parallel surface

Rotational Landslide

Ground rotates

Block slide

one block falls

Topple

piece of cliff falling

earthflow

hourglass slope

debris flow

with rain and soil slope flow

debris avalanche

mas malala na debris flow

lateral spread

spreading of materials on floor

Tsunami

tidal waves, huge waves

Erosion

rock particles worn away and moved somewhere else by a transporr agent

Natural Causes of Erosion

Heavy Rainfall

Wind

Soil Erodibility

Local Climate

Vegetation Loss

Human Causes of Erosion

Mining

Deforestation

Shifting Agriculture

Saltwater Intrusion

Seawater infiltrates freshwater aquifers

contaiminating fresh water supply

human activties like groundwater exrraction and construction