Oprettet af sabai sabai d. 01/02-2010 20:47
#18
Nid skrev:
Hold da kæft hvor er I Kloge ÅGE

ja også var der dengang??????? og dengang, trækker lige stikket gider ikke bruge mere energi i denne tråd, den skal som sædvanlig ødelægges

Er der nogle af Jer kloge åger der har været i Hua-Hin sidste år? der var ingen oversvømmelser, ej heller forrige år skulle jeg hilse at sige.
MVH NID.
Nid har du været der under en storm ?
Her lidt info..
Coastline Change due to Storm Surge during 1989-2006 at Hua Hin, Prachuap
Khiri Khan Province, Southern Thailand
Wasuntra Chairat1*, Boossarasiri Thana1and Sathon Vijanwannaluk2
1. Department of Geology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.
2. Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.
*Corresponding author e-mail:
Abstract
The short-term erosion is concentrated at the coastline of Amphoe Hua Hin, Prachuab Kiri Khan, province. Typhoon
Gay and Typhoon Linda, which are two of the severe storms passing the Gulf of Thailand and hit the southern coastal
provinces in 1989 and 1997 respectively, There are the cases of tropical cyclones passing through Thailand and the
strong northeast monsoon in December 2006. The strong wind generate high wave. This is cause of storm surge. The
influence of wind wave is aim to coastline change on southern coastline. The risky area of erosion has been reported
to have the land lost 1 to 5 m/y at Hua Hin area. In this paper, remote sensing is applied for measure the change areas
on coastline of Amphoe Hua Hin, Prachuab Kiri Khan province during typhoon Gay(1989), typhoon Linda (1997) moved
over the Gulf of Thailand, and during the strong seasonal monsoon(2006) including with analyze meteorological data
to determine wind direction and wave height during these event .The study result revealed that there were eroded
of coastline of Amphoe Hua Hin, Prachuab Kiri Khan province during typhoon Gay is 25.39 meters, Typhoon Linda is
10.36 meters and the strong seasonal monsoon on 20-24 December is 1.23 meters. Root mean square error of these
results was less than 0.15. In these events, the highest erosion was found between Hua Hin airport and pier of Hua
Hin. Moreover, long-term measurement during 1989-2006 showed that there were erosion areas about 16.63 meters,
so there was accretion of beach appeared after Typhoon Gay and Typhoon Linda passed. It contradicts the previous
research. This result can be used to support coastal study and management in the future.The case of typhoon passes
to the Gulf of Thailand is not often, it generates during ten years. Nevertheless, the strong northeast monsoon can
be generated 1-2 times per year. Therefore, shoreline protection should be considered with long term protection to
protect the coastline.
Key words: storm surge, coastline change, Hua Hin
1. Introduction
Amphoe Hua Hin, Prachuab Khiri Khan Province
is in the western region of Thailand. It is on the upper
peninsula that lies in the west Gulf of Thailand, bounded
by latitude 12° 30’ to 12° 38’ north and longitude 99° 45’
to 100° 00’ east. Along this coastline, many important
historical places, temples, communities, aquaculture
and agriculture areas, and various well-known tourist
attractions with economic significance, which have
been, throughout the years, sources of incomes to the
local communities. The rapid erosion along the length
of the beach has occurred when there are strong wind,
high wave actions and coastal structures. Storm surge
and seasonal wave actions are the important causes
of coastal erosion in this area. The top layer of sand
has been washed away by wave action so much so
that the sand berm and hard clay layer underneath becomes
exposed. Therefore, this study was conducted
to determine the coastline change due to storm surge
during 1989-2006 at Ban Hua Hin Amphoe Hua Hin,
Prachuap Khiri Knan province.
2. Methods
The methodology of this study was divided into
three steps.
Mere info..
http://www.geo.sc...DF/124.pdf