weather & climate (responses to cyclones) Flashcards
responses to cyclones?
- —> emergency action
- —> prediction & warning
- —> land use control
- —> floodplain management
- —> reducing vulnerability of infrasatructure
emergency action (evacuation)
it involves taking immediate action in response to any situation that poses risk to people’s health and lives
- —> community cyclone shelter
- —> built with strong concrete
- —> able to withstand cyclones
- —> located near homes of ppl
emergency action (evacuation) examples
- —> Bangladesh and India
- —> greatly reduced no. of casualties
emergency action (assistance from NGOs)
- —> provide aid for victims
- —> Red cross
- —> Oxfam
- —> Save the children
- —> organize and send relief teams to countries struck by cyclones
- —> Philippine red cross
- —> provided food packages consisting of rice, noodles, and sardines to ppl affected by Typhoon Megi
mitigation measures?
- —> prediction and warning
- —> land use control
- —> floodplain management
prediction warning
- —> analyze long-term climate records
- —> establishes patterns of occurrence & severity of damage
- —> predict next cyclone
- —> computer modeling
- —> predict cyclone’s path
- —> predict degree of damage
prediction warning limitations
- —> only indicate the frequency of tropical cyclone
- —> not accurate in when future cyclones will occur
- —> predicted paths of cyclones inaccurate
- —> predictions based on weather information
- —> weather conditions change quickly
prediction warning examples
- —> Japan & USA
- —> installed warning systems for cyclones
- —> info on the severity of cyclones & necessary precautionary measures that need to be taken are announced to the public
land use control
—-> regulates the use of land by placing restrictions on how the land can be used
- —> areas along coasts are vulnerable to storm surges and flooding
- —> developers may need to pay higher taxes to use land along coasts
- —> discourage development in these vulnerable areas
- —> land along coasts can be used for recreational purposes like parks
- —> protected zones: barrier against storm surges
land use control limitations
- —> only successful when authorities enforce them
- —> requires much time and manpower
- —> developments found along coastlines may have been around for a long time
- —> residents may be reluctant to move out of these areas
- —> govt needs to purchase land in these areas in order to convert them into recreational areas
- —> costly
floodplain management
floodplain: low-lying area near rivers or coasts
floodplain management: masterplan to reduce potential of flood damage
masterplan involves
- —> mapping the land use of an area
- —> implementing measures to prevent floods
- —> ensuring that new developments in floodplains are not prone to floods
- —> reducing potential of flood damage in already developed floodplains
- —> includes drawing up evacuation plans to ensure ppl are able to leave flooded areas as quickly as possible
floodplain management examples
- —> Cairns, Australia
- —> based on models of storm surges floods
- —> drawing up of evacuation plans
- —> ensure that ppl are able to evacuate as quickly as possible
reducing vulnerability of infrastructure
—-> infrastructure designed to withstand impacts of cyclones
Buildings resistant to wind & water:
—-> galvanized steel hurricane ties are nailed to roof to prevent it from being blown off by winds
Regular inspection of river embankments and coastal dikes
- —> river embankments: levees which are walls constructed by sides of rivers to prevent river from overflowing
- —> coastal dikes: artificial walls made of stone, often meant to prevent flooding of coastal areas
- —> continuously eroded by waters
locating utility lines underground
- —> power
- —> telecommunication lines
- —> water supply networks
- —> placed underground to avoid damage by strong winds and storm surges
- —> ensure services are maintained during and after a cyclone
reducing vulnerability of infrastructure examples
- —> USA
- —> employ specialized companies
- —> improve designs of roof and openings of houses
- —> Jensen Beach, Florida
- —> Hurricane Wilma
- —> 2005
- —> suffered only minor roof damage