1.7c - Phillipines Flashcards
Define multiple hazard zone
Multiple hazard zones are places where two or more natural hazards occur, and in some cases interact to produce complex disasters
State 5 categories of hazards
meterological, hydrological, geophysical, climatological and bilogical
State two examples of a multiple hazard zone
- remote region of a developing coutry hit by an eq with no health servces leads to disease outbreak wiht not clean water or medicine
- volcanic eruptions coincide with rainy season/tropical cyclone leading to lahars where lloose ash and rock picked up by free flowing water
How many volcanoes does PP have
Has 37 volcanoes – 18 of which are active.
How many destructive eqs
12 destructive earthquakes recorded in last 40 years.
Why is PP prone to tsunamis
Eastern and Northern coasts face the Pacific Ocean (the world’s most tsunami-prone ocean).
When do rain bearing winds hit PP
Tropical monsoonal climate brings rain-bearing winds from SW (May-Oct) & NE (Nov-Feb).
What is the general pattern with typhoons in PP
An average of 20 typhoons hit the country (June-Dec), of which 7-10 are expected to be destructive.
Secondary impacts of typhoons?
High risk of storm surges, floods and landslides.
Lies within SE Asia’s typhoon belt – saturated hillslopes
Describe poverty in PP
25% of population live in poverty (average).
But..50% of rural population live in poverty and primarily dependent on agriculture.
Describe development context for PP
Rapidly developing Lower middle income country with large population (101 million growing at 1.72% a year)
Describe urbanisation in PP
Rapid urbanisation has led to large unplanned informal settlement especially in flood prone coastal areas and high population densities
State the interacting between tectonic and hydro meteorological hazards in PP
- Cyclones within the tropics; some plate boundaries are also in the tropics, e.g. Philippines
- Tectonic events leave steep slopes, rugged land and poor vegetation cover (if destroyed by, e.g., volcanoes)
- Extreme weather events / Heavy rainfall (e.g. La Nina) saturate the soil and trigger mudslides and landslides, particularly if vegetation has been removed
- Heavy rain mixes with volcanic ash, creating large lahars might kill many people (e.g. Typhoon Yunya in 1991)
- Volcanic eruptions release lots of water and the plume creates static charges that create lightning and thunderstorms