Ashari Wicaksono 2017-02-21 23:26:12

I am understand about sea surface height

matthew.lancaster 2017-02-21 15:52:18

This was a very good learning experience. The descriptions and diagrams were clear and concisely but thoughtfully explained. I improved my pre-assessment score to the quiz by almost 100%.

Davit2010 2017-01-20 13:38:12

excellent

10081343 2017-01-12 18:58:40

This quiz was very helpful

terevera 2016-12-04 11:40:53

I am a little surprised because during the quiz the correct answer for question 8 (related to reference used by NOAA for depth in navigation charts: MLLW) was not an option, Why????????, that was really weird!!! I was pretty sure about the answer but I was not able to find, so I chose MLW. Check it, please.

IDIAZG 2016-11-28 04:57:35

Satisfactorio, me ha parecido muy fascinante y realmente didáctico he aprendido mucho de esta lección. me encantaría adentrarme más a la parte técnica de los procedimientos matemáticos de los datos de marea y control por medio de la tecnología GPS.

mike@bom 2016-11-11 00:27:10

I work with tides and sea levels and consequently datums. While tidal datums are well understood Geoids and Ellipsoids are less so.

bouksim 2016-11-08 09:51:32

Interesting lesson for those who do not have prior information about tides

ByDand 2016-11-07 10:40:57

Sheds light on a confusing subject, with practical implications. Very worthwhile.

willsbcad 2016-10-29 16:16:24

Great information on tides.

2016-10-27 23:00:46

A good course, in Australia we use different datum and tidal epoch, but the principles are the same

Luna23 2016-09-25 21:04:30

Informative topics.

eric.white 2016-09-23 16:38:44

This works very well for both introducing people new to CO-OPS as well as a refresher for those who don't use datums on a daily basis. Important information and well done!

JKGUSACE 2016-09-22 07:26:01

Very good lesson on explaining datums.

KTuinaceva 2016-09-21 17:19:20

Firstly the Met Ed lesson was effective for learning,the content was relevant to my work studies,it increased my understanding of the topic, the lesson contain particularly interesting and useful, i would like to see some kind of improvement to this lesson and lastly would recommend this lesson to others

IBavia 2016-09-20 21:39:52

Lesson was interesting and very useful

jonwaggoner 2016-09-20 17:41:04

Good coverage of the basic concepts behind various vertical datums. Could use some coverage of methods for converting between datums (e.g. VERTCON or VDatum).

After completing this lesson, the learner should be able to do the following:

• List the three types of vertical datums
• Describe the reference surface for each vertical datum
• Define the following terms:
  • Sea surface height
  • Ocean surface topography
  • Global mean sea level
  • Local mean sea level
  • Relative sea level
• Recall the lateral extent of the different vertical datums
• Recall the geopotential datums in use (in 2016)
• Given a time series of water elevations at a tide gauge, identify the tide type
• List the different tidal datums and provide an example of a common application of each one
• Define tidal epoch and recall the national tidal datum epoch in 2016
• Describe the conditions under which a tidal datum is updated more frequently
• Describe the tidal datum information available

sea level, mean sea level, MSL, datum, vertical datum, tides, tidal datum, tidal epoch, local mean sea level, relative sea level, Mean lower low water, MLLW, mean high water, MHW, geoid, ellipsoid, orthometric, sea surface height, global mean sea level, ocean surface topography, dynamic ocean topography, NAVD 88, NGVD 29, National Tidal Datum Epoch, NTDE