BSI PD CEN/TR 17909:2023
$167.15
Hydrometry. On-site measurement of snow depth and depth of snowfall
| Published By | Publication Date | Number of Pages |
| BSI | 2023 | 38 |
This document defines the requirements for on-site measurements of snow depth and depth of snowfall. It provides guidance on manual and automatic measuring techniques, and information about sources of errors and measurement uncertainty.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 8 | 1 Scope 2 Normative references 3 Terms and definitions |
| 12 | 4 Symbols 5 Principles 5.1 General |
| 13 | 5.2 Snow depth |
| 14 | 5.3 Depth of snowfall 6 Measurement principles 7 Siting and exposure 7.1 General |
| 15 | 7.2 Terrain 7.3 Wind 7.4 Thermal radiation 7.5 Obstacles 7.6 Disturbance by humans and animals 7.7 Maintenance of measurement site |
| 16 | 8 Measurement of snow depth 8.1 General 8.2 Calibration |
| 17 | 8.3 Manual measurements 8.3.1 Measurement techniques 8.3.1.1 Snow stake 8.3.1.2 Manual snow depth sampling 8.3.2 Procedure |
| 18 | 8.4 Sources of error 8.4.1 General 8.4.2 Reading errors |
| 19 | 8.4.3 Misjudgement of the base level 8.5 Automated measurements 8.5.1 General |
| 20 | 8.5.2 Ultrasonic measurements |
| 22 | 8.5.3 Optical measurements |
| 25 | 8.5.4 Data quality control 8.6 Sources of error 8.6.1 General |
| 26 | 8.6.2 Optic measurements 8.6.3 Ultrasonic measurements 8.7 Choice of measuring method 9 Measurement of depth of snowfall 9.1 General |
| 27 | 9.2 Measurement 9.2.1 Measurement techniques 9.2.2 Procedure |
| 28 | 9.3 Sources of error 10 Quality assurance |
| 29 | Annex A (informative)Snow stake |
| 30 | Annex B (informative)Manual snow depth measuring devices |
| 31 | Annex C (informative)Electronic probe |
| 32 | Annex D (informative)Ultrasonic snow depth measuring station |
| 33 | Annex E (informative)Laser snow depth measuring station |
| 34 | Annex F (informative)Snow board |
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