Cost benefit analysis + stats and OS map skill clarification

Cost benefit analysis is comparing advantages and disadvantages of protecting a coastline; working out the cost, what problems they create, their effect on the environment. They ask themselves: Do the positives outweigh the negatives?

There are 3 types of reasons:

Social reasons, Economic reasons and Environmental reasons

Happisburgh:

Social:

Positives: safety and security

Negatives: Properties losing value, people losing houses due to erosion and because of more erosion comes less settlements and less tourism

Environmental:

Positives: Wildlife are preserved and protected

Negatives: Sea defences disturb the wildlife.

Economic:

Negatives: Farmland is lost = lost jobs, Some sea defences limit tourism due to easy access, sea defences are expensive so all the money goes towards that and not other important things such as house compensation.

Grid references are measured along the lines for the 6 figure

If it goes:

—31—32—33—34—>

The 3rd number of the easting will go towards the east

But for a northing is measured how north/south it is.

Eastings measure how east/west it is and northings measure how north/south it is. ALONG THE CORRIDOR UP THE STAIRS; EASTINGS COME FIRST.

STATS ABOUT HAPPISBURGH:

Happisburgh has a population of 1400 people in about 600 houses. The village contains a notable stone church dating from the 14th century, an impressive manor house, listed buildings and a famous red and white striped lighthouse. Historic records indicate that over 250 m of land were lost between 1600 and 1850. More recently the village was affected by the tragic floods of 1953 that claimed the lives of 76 Norfolk residents. Coastal defences built at Happisburgh have slowed down the rate of retreat. However, large sections are now in disrepair. Sea-level rise and climate change, including increased storminess, may also increase the rate of erosion. Agriculture and tourism contribute significantly to the economy of the village and surrounding land although this is threatened by the receding cliff line that, prior to the construction of rock armour at the northern end of the village, had claimed at least one property per year plus significant quantities of agricultural land.