Sea levels

Subject: Rising Sea Levels-The Climate Debate

Thisfactual, succinct article on sea-level changes has been sent to me. It isconsistent with other evidence - as against conjecture.

Daniel Fitzhenry – Hydrographic Surveyor

581Singleton Road,

LaughtondaleNSW 2775

AustraliaPhone 02 4566 4576

Mobile0419 876 222 Email: [email protected]

ABN11 216 559131

RisingSea Levels–The Climate Debate

Theseas and oceans to the east of Australia form the largest body of water onEarth.

Thisbroadly connected vast body of water presents a genuine sea level. The SydneyFort Denison Recording Station provides stable, accurate and genuine mean sealevel data.

Thefollowing table shows mean sea levels at 10-year intervals and

theselevels are related to Chart Datum which is at the lowest spring tide level.

100YEARS OF MEAN SEA LEVELS AT FORT DENISON, SYDNEY:

1914–1.11 metres

1924–0.98 metres

1934–0.98 metres

1944–0.97 metres

1954–1.00 metres

1964–1.09 metres

1974–1.09 metres

1984–1.02 metres

1994–1.04 metres

2004–1.08 metres

2014–1.12 metres

2019–1.05 metres

Accordingly,the mean sea level at Sydney in 2019 is 6 centimetres lower than the mean

sealevel at Sydney in 1914 when the Bureau Of Meteorology commenced recording

MeanSea Level.

HighSea Levels during Storm, Cyclone & Low-Pressure Events.

BBCand ABC commentators have asserted that sea levels may permanently rise by 1 to2 metres in the next 100 years. 100 years of records on the largest water bodyon Earth indicates that this is incorrect.

Therehas always been short period storm and low pressure rises in sea levels. Thehighest recorded sea level at Sydney occurred during the 1974 low-pressurestorm. The sea level rose to 30 cm above high spring tide level for one day.During recorded history, there has been no indication whatsoever of a 100 to200 cm permanent rise in sea level.

Therewill always be short period storm, cyclone and low pressure rises in sea levelsin close proximity to cyclone and storm centres. These storm centre rises insea levels are not permanent.

Oceanswells and storm waves can exceed 16 metres during major storm surgeevents. It is these massive waves that have caused significant damage tocoastal and island communities in the past. It is certain that huge stormevent waves will occur in the future and will cause significant damage to theisland and low lying communities. Coastline and flood zone protection is thesane answer to storm event damage.

Itis polite and essential that the world population should avoid incorrectclimate nonsense. We need to divert the alarmist energy to caring for theplanet. Cease polluting the oceans. Prevent development of flood-prone land andthreatened coastal zones that have been, and will always be, subject toflooding.

DanFitzhenry.

Capt.Daniel Fitzhenry

–CPHS1Hydrographic Surveyor - Registered Surveyor – Dip. Environmental Studies(Macq.) Steven Fitzhenry–B.Eng. (Civil) Sydney – MIE Aust. – Maritime Civil& Structural Engineer – Project Manager Capt. Adam Fitzhenry–B. Eng.Honours (Civil) Syd, MBA AGSM – Maritime Civil & Structural Engineer –Oceanographer Ellie Fitzhenry–B.Sc (Sydney) – Marine Biology & Ecology –Marine Science Capt. Paul McGaw–ROV Operations Manager – Electrical &Mechanical Engineer Tracey Hay–B.A (Macq) – Project Coordinator –IT, Statistics& Research Manager