Link to RLR information.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 2002Jan09 :
For an analysis of sea level changes in Hong Kong, see
"Sea level changes in Hong Kong from tide gauge measurements"
by X.Ding et al., Journal of Geodesy, 74, 683-689, 2001 and
"Long-term sea-level changes in Hong Kong from tide-gauge
records" by X.Ding et al., Journal of Coastal Research,
17, 749-754, 2001.
1929-1930 Gauge sited at 22 17 N 114 13 E
1949 Gauge installed at Aresenal Yard on 26th October
1952 Gauge transferred to North Point on 23rd October
Replaced by Quarry Bay (611/010) after 1985
=========================== BENCHMARK INFORMATION UPDATE ADDED 12-JUL-93 :
North Point, HK 611/011 RLR(1975) is 11.2m below Rifleman's Bolt
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 1999Dec03 :
According to Dr.Baki Iz (Hong Kong Polytechnic University)
reference benchmarks at the North Point and Quarry Bay gauges show
from episodic levelling significant settlement with respect
to neighbouring marks (October 1998). However, data provided for these
sites are conventionally referred to the more stable Principal Datum
and Rifleman's Bolt benchmark by means of frequent levelling.
Note that the North Point and Quarry Bay datums are the same and
their RLR time series may be combined to make one continuous record
if wished with reasonable confidence.
============================ STATION RELOCATED ============================
Station moved - new data held in station 611/010