What is Lmsl?
Local mean sea level (LMSL) is defined as the height of the sea with respect to a land benchmark, averaged over a period of time (such as a month or a year) long enough that fluctuations caused by waves and tides are smoothed out.
What does tidal datum mean?
A tidal datum is a standard elevation defined by a certain phase of the tide. Tidal datums are used as references to measure local water levels and should not be extended into areas having differing oceanographic characteristics without substantiating measurements.
What is moturiki datum?
MSL is Mean Sea Level Vertical datum for the region. This is a fixed survey datum set by Land Information NZ (LINZ). For the Bay of Plenty, MSL Datum (called Moturiki Vertical Datum–1953 or MVD–53 for short) was determined from tide gauge measurements from Feb 1949 to Dec 1952.
What does Lmsl mean in text?
1) LMSL — Local Mean Sea Level.
What does IMS you mean?
“Irritable Male Syndrome” is the most common definition for IMS on Snapchat, WhatsApp, Facebook, Twitter, Instagram, and TikTok. IMS. Definition: Irritable Male Syndrome.
How is the mean sea level ( MSL ) calculated?
Mean Sea Level (MSL) is a tidal datum which is computed by the National Ocean Service (NOS), Center for Operational Oceanographic Products and Services (CO-OPS) as part of the National Tidal Datum Epoch (NTDE) based on data collected over a 19-year tide cycle.
When do you need a datum for elevation?
If data collection location, bench marks, or height above a given elevation is referred to in the text body, the datum is required. General physical descriptions of an area, which include elevation, do not require a datum. Does “sea level” serve as a substitute for a specified vertical datum?
Where can I find the vertical datum model?
For vertical datums applicable to U.S. territories, refer to the NGS vertical datums web page. If ellipsoid heights are established by using a GNSS survey and converted to elevations (orthometric heights) for publication, reference information should include the geoid model used in the conversion in addition to the vertical datum.
Which is the reference datum for coastal management?
In order to apply these datums for surveying or coastal management they must be reduced to Mean Lower Low Water (MLLW), which is the reference datum for predictions, bench mark publication and nautical charting.