Everything about N-OF02 Overflow Test (Clay Erosion) id;activity_name;activity_type;activity_descriptor;breaching;animal;erosion;temporary;levee_survey;prolonged;start_date;end_date;date_length_day;date_length_hour;date_other;levee_stretch;location_x;location_y;location_z;location_descriptor;location_other;objectif_important;objectif_knowledge;pre_condition;act_des;monitoring_process;monitoring_reasoning;limits;during_activity;post_activity;activity_result;results_conc;knowledge_desc;ref_links;wrk_1;wrk_2;wrk_3;key_info 64;N-OF02 Overflow Test (Clay Erosion);Strength test;"The initial part of the test is performed as a reference test. The clay erosion experiment on the last day of testing is aimed at measuring clay erosion rates.";False;False;True;False;False;False;2021-12-01 08:00:00;2021-12-03 17:00:00;;;;VI;51.34796;4.22963;12.1;Landward slope of levee.;"Lambert'72 coordinates: X=140306.5 m Y=226474.1 m";Measure clay erosion speeds during overflow.;The clay erosion experiment is related to establishing relations between full scale experiments and small scale (laboratory) experiments on clay erosion.;First part of the test: levee slope in good condition. For the clay experiment, a full width step shape was excavated on the lower part of the levee.;12 blocks of of overflow activity for a duration of 10.5 hours. Specific discharge up to 550 l/s.m.;- Overhead cameras (4) - Acoustic water height sensors - Electromagnetic current velocity sensors - Discharge sensor (EM or acoustic);"Description of the hydraulic conditions of the overflow. The setup is described in Vercruysse et al. (2022): ""Design and application of an overflow generator."" (Ref WL2022R20_047_1)";;"The first part of the test showed an evolution as expected based on N-OF01. No critical damage occurred. During the clay erosion experiment, clay effectively eroded and measurements were performed.";Slope damaged due to man-made step shape excavation on the lower slope.;;"The evolution of the vegetated levee under normal overflow conditions corresponds to the observations for the reference section N-OF01, albeit for a shorter time span: 8 hours after 2 days of testing lead to no significant damage to the levee.For insights and conclusions concerning the erosion tests(where they are put in relation to other large and small scale tests), reference is made tovan Damme et al. (2022). Factual data report: https://stowanl-my.sharepoint.com/:w:/g/personal/llhpp_stowa_nl/EX5yYnuJ-EBBjoKAxAwg8LkBef8ra9V_-GHjzbkz0Was8g?e=pyaUSq Annexes: https://stowanl-my.sharepoint.com/:w:/g/personal/llhpp_stowa_nl/EWIzoxIhxopCryc6744YgHYBBWr_0fhoGpJ_1pSy0_tM2w?e=pY8Hc6";Two reports will be added in Februari 2023.;under development;True;False;False; All DATA concerning N-OF02 Overflow Test (Clay Erosion) data_type;data_descripion;date_date;data_find;data_media;data_media_find Timeseries;Description: Timeseries of Discharge, Water Height and Current Velocity in different positions on the levee slope.;;https://stowanl-my.sharepoint.com/:f:/g/personal/llhpp_stowa_nl/Eqy6ufSZTvpMtLp-EmBNmrwBtw415PrePyntOqmfHin48A?e=zrsrve;; Photo imagery;2 portals with in total 4 cameras are used to take surface photographs of the levee slope at different times during and in between overflow activity. The surface images in between overflow blocks show damage and vegetation evolution.;;https://stowanl-my.sharepoint.com/:f:/g/personal/llhpp_stowa_nl/Elnfx2kdThlChB0YcmEvYBsBdrznWpxYzySqNU6-wWScLg?e=n5Vr8M;; All EQUIPMENTS concerning N-OF02 Overflow Test (Clay Erosion) equip_type;equip_usage Overflow generator.;"The setup is described in Vercruysse et al. (2022): ""Design and application of an overflow generator."" (Ref WL2022R20_047_1)" All SENSORS concerning N-OF02 Overflow Test (Clay Erosion) No sensors added