{"id":425461,"date":"2024-10-20T06:56:59","date_gmt":"2024-10-20T06:56:59","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bsi-pd-cen-tr-179092023\/"},"modified":"2024-10-26T13:06:17","modified_gmt":"2024-10-26T13:06:17","slug":"bsi-pd-cen-tr-179092023","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bsi-pd-cen-tr-179092023\/","title":{"rendered":"BSI PD CEN\/TR 17909:2023"},"content":{"rendered":"

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.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
8<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
12<\/td>\n4 Symbols
5 Principles
5.1 General <\/td>\n<\/tr>\n
13<\/td>\n5.2 Snow depth <\/td>\n<\/tr>\n
14<\/td>\n5.3 Depth of snowfall
6 Measurement principles
7 Siting and exposure
7.1 General <\/td>\n<\/tr>\n
15<\/td>\n7.2 Terrain
7.3 Wind
7.4 Thermal radiation
7.5 Obstacles
7.6 Disturbance by humans and animals
7.7 Maintenance of measurement site <\/td>\n<\/tr>\n
16<\/td>\n8 Measurement of snow depth
8.1 General
8.2 Calibration <\/td>\n<\/tr>\n
17<\/td>\n8.3 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 <\/td>\n<\/tr>\n
18<\/td>\n8.4 Sources of error
8.4.1 General
8.4.2 Reading errors <\/td>\n<\/tr>\n
19<\/td>\n8.4.3 Misjudgement of the base level
8.5 Automated measurements
8.5.1 General <\/td>\n<\/tr>\n
20<\/td>\n8.5.2 Ultrasonic measurements <\/td>\n<\/tr>\n
22<\/td>\n8.5.3 Optical measurements <\/td>\n<\/tr>\n
25<\/td>\n8.5.4 Data quality control
8.6 Sources of error
8.6.1 General <\/td>\n<\/tr>\n
26<\/td>\n8.6.2 Optic measurements
8.6.3 Ultrasonic measurements
8.7 Choice of measuring method
9 Measurement of depth of snowfall
9.1 General <\/td>\n<\/tr>\n
27<\/td>\n9.2 Measurement
9.2.1 Measurement techniques
9.2.2 Procedure <\/td>\n<\/tr>\n
28<\/td>\n9.3 Sources of error
10 Quality assurance <\/td>\n<\/tr>\n
29<\/td>\nAnnex A (informative)Snow stake <\/td>\n<\/tr>\n
30<\/td>\nAnnex B (informative)Manual snow depth measuring devices <\/td>\n<\/tr>\n
31<\/td>\nAnnex C (informative)Electronic probe <\/td>\n<\/tr>\n
32<\/td>\nAnnex D (informative)Ultrasonic snow depth measuring station <\/td>\n<\/tr>\n
33<\/td>\nAnnex E (informative)Laser snow depth measuring station <\/td>\n<\/tr>\n
34<\/td>\nAnnex F (informative)Snow board <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Hydrometry. On-site measurement of snow depth and depth of snowfall<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2023<\/td>\n38<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":425468,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[265,2641],"product_tag":[],"class_list":{"0":"post-425461","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-17-120-20","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/425461","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/425468"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=425461"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=425461"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=425461"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}