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  "author": "[{\"affiliation\": \"WSL Institute for Snow and Avalanche 
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  "author": "[{\"affiliation\": \"WSL Institute for Snow and Avalanche 
            
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Research SLF, Davos, Switzerland\", \"affiliation_02\": \"\", 
3
Research SLF, Davos, Switzerland\", \"affiliation_02\": \"\", 
            
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\"affiliation_03\": \"\", \"data_credit\": [\"collection\", 
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\"affiliation_03\": \"\", \"data_credit\": [\"collection\", 
            
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\"validation\", \"curation\", \"software\", \"publication\"], 
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\"validation\", \"curation\", \"software\", \"publication\"], 
            
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\"email\": \"bastian.bergfeld@slf.ch\", \"given_name\": \"Bastian\", 
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\"email\": \"bastian.bergfeld@slf.ch\", \"given_name\": \"Bastian\", 
            
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\"identifier\": \"0000-0002-3316-1922\", \"name\": \"Bergfeld\"}, 
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\"identifier\": \"0000-0002-3316-1922\", \"name\": \"Bergfeld\"}, 
            
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{\"affiliation\": \"WSL Institute for Snow and Avalanche Research SLF, 
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{\"affiliation\": \"WSL Institute for Snow and Avalanche Research SLF, 
            
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Davos, Switzerland\", \"affiliation_02\": \"\", \"affiliation_03\": 
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Davos, Switzerland\", \"affiliation_02\": \"\", \"affiliation_03\": 
            
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\"\", \"data_credit\": [\"collection\", \"supervision\"], \"email\": 
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\"\", \"data_credit\": [\"collection\", \"supervision\"], \"email\": 
            
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\"vanherwijnen@slf.ch\", \"given_name\": \"Alec\", \"identifier\": 
11
\"vanherwijnen@slf.ch\", \"given_name\": \"Alec\", \"identifier\": 
            
12
\"0000-0001-5637-6486\", \"name\": \"van Herwijnen\"}, 
12
\"0000-0001-5637-6486\", \"name\": \"van Herwijnen\"}, 
            
13
{\"affiliation\": \"WSL Institute for Snow and Avalanche Research SLF, 
13
{\"affiliation\": \"WSL Institute for Snow and Avalanche Research SLF, 
            
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Davos, Switzerland\", \"affiliation_02\": \"\", \"affiliation_03\": 
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Davos, Switzerland\", \"affiliation_02\": \"\", \"affiliation_03\": 
            
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\"\", \"data_credit\": \"software\", \"email\": 
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\"\", \"data_credit\": \"software\", \"email\": 
            
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\"benjamin.reuter@slf.ch\", \"given_name\": \"Benjamin\", 
16
\"benjamin.reuter@slf.ch\", \"given_name\": \"Benjamin\", 
            
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\"identifier\": \"0000-0002-7302-3858\", \"name\": \"Reuter\"}, 
17
\"identifier\": \"0000-0002-7302-3858\", \"name\": \"Reuter\"}, 
            
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{\"affiliation\": \"WSL Institute for Snow and Avalanche Research SLF, 
18
{\"affiliation\": \"WSL Institute for Snow and Avalanche Research SLF, 
            
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Davos, Switzerland\", \"affiliation_02\": \"\", \"affiliation_03\": 
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Davos, Switzerland\", \"affiliation_02\": \"\", \"affiliation_03\": 
            
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\"\", \"email\": \"gr\\u00e9goire.bobillier@slf.ch\", \"given_name\": 
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\"\", \"email\": \"gr\\u00e9goire.bobillier@slf.ch\", \"given_name\": 
            
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\"Gr\\u00e9goire\", \"identifier\": \"0000-0002-6913-5611\", \"name\": 
21
\"Gr\\u00e9goire\", \"identifier\": \"0000-0002-6913-5611\", \"name\": 
            
22
\"Bobillier\"}, {\"affiliation\": \"Institute for Mechanical Systems, 
22
\"Bobillier\"}, {\"affiliation\": \"Institute for Mechanical Systems, 
            
23
ETH Zurich, Zurich, Switzerland\", \"affiliation_02\": \"\", 
23
ETH Zurich, Zurich, Switzerland\", \"affiliation_02\": \"\", 
            
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\"affiliation_03\": \"\", \"data_credit\": \"supervision\", \"email\": 
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\"affiliation_03\": \"\", \"data_credit\": \"supervision\", \"email\": 
            
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\"dual@imes.mavt.ethz.ch\", \"given_name\": \"J\\u00fcrg\", 
25
\"dual@imes.mavt.ethz.ch\", \"given_name\": \"J\\u00fcrg\", 
            
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\"identifier\": \"0000-0001-5861-9058\", \"name\": \"Dual\"}, 
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\"identifier\": \"0000-0001-5861-9058\", \"name\": \"Dual\"}, 
            
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{\"affiliation\": \"WSL Institute for Snow and Avalanche Research SLF, 
27
{\"affiliation\": \"WSL Institute for Snow and Avalanche Research SLF, 
            
28
Davos, Switzerland\", \"affiliation_02\": \"\", \"affiliation_03\": 
28
Davos, Switzerland\", \"affiliation_02\": \"\", \"affiliation_03\": 
            
29
\"\", \"data_credit\": \"supervision\", \"email\": 
29
\"\", \"data_credit\": \"supervision\", \"email\": 
            
30
\"schweizer@slf.ch\", \"given_name\": \"J\\u00fcrg\", \"identifier\": 
30
\"schweizer@slf.ch\", \"given_name\": \"J\\u00fcrg\", \"identifier\": 
            
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\"0000-0001-5076-2968\", \"name\": \"Schweizer\"}]",
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\"0000-0001-5076-2968\", \"name\": \"Schweizer\"}]",
            
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  "author_email": null,
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  "author_email": null,
            
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  "creator_user_id": "c8312541-12f8-4533-a778-53f3d3e6a99b",
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  "creator_user_id": "c8312541-12f8-4533-a778-53f3d3e6a99b",
            
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  "date": "[{\"date\": \"2021-06-23\", \"date_type\": \"collected\", 
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  "date": "[{\"date\": \"2021-06-23\", \"date_type\": \"collected\", 
            
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\"end_date\": \"\"}]",
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\"end_date\": \"\"}]",
            
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  "doi": "10.16904/envidat.231",
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  "doi": "10.16904/envidat.231",
            
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  "funding": "[{\"grant_number\": \"200021_169424\", \"institution\": 
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  "funding": "[{\"grant_number\": \"200021_169424\", \"institution\": 
            
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\"Swiss National Science Foundation\", \"institution_url\": \"\"}]",
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\"Swiss National Science Foundation\", \"institution_url\": \"\"}]",
            
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  "groups": [],
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  "groups": [],
            
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  "language": "en",
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  "language": "en",
            
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  "license_id": "wsl-data",
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  "license_id": "wsl-data",
            
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  "license_title": "WSL Data Policy",
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  "license_title": "WSL Data Policy",
            
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  "license_url": 
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  "license_url": 
            
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ps://www.wsl.ch/en/about-wsl/programmes-and-initiatives/envidat.html",
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ps://www.wsl.ch/en/about-wsl/programmes-and-initiatives/envidat.html",
            
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  "maintainer": "{\"affiliation\": \"WSL Institute for Snow and 
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  "maintainer": "{\"affiliation\": \"WSL Institute for Snow and 
            
48
Avalanche Research SLF, Davos, Switzerland\", \"email\": 
48
Avalanche Research SLF, Davos, Switzerland\", \"email\": 
            
49
\"bastian.bergfeld@slf.ch\", \"given_name\": \"Bastian\", 
49
\"bastian.bergfeld@slf.ch\", \"given_name\": \"Bastian\", 
            
50
\"identifier\": \"0000-0002-3316-1922\", \"name\": \"Bergfeld\"}",
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\"identifier\": \"0000-0002-3316-1922\", \"name\": \"Bergfeld\"}",
            
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  "maintainer_email": null,
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  "maintainer_email": null,
            
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  "metadata_created": "2021-06-23T14:00:28.699523",
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  "metadata_created": "2021-06-23T14:00:28.699523",
            
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  "metadata_modified": "2021-06-27T09:21:59.978520",
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  "metadata_modified": "2021-06-27T09:24:20.845400",
            
54
  "name": 
54
  "name": 
            
55
agation-in-weak-snowpack-layers-insights-from-high-speed-photography",
55
agation-in-weak-snowpack-layers-insights-from-high-speed-photography",
            
56
  "notes": "This data set includes material and results described in 
56
  "notes": "This data set includes material and results described in 
            
57
the related research article:\r\n\r\nBergfeld, B., van Herwijnen, A., 
57
the related research article:\r\n\r\nBergfeld, B., van Herwijnen, A., 
            
58
Reuter, B., Bobillier, G., Dual, J., and Schweizer, J.: Dynamic crack 
58
Reuter, B., Bobillier, G., Dual, J., and Schweizer, J.: Dynamic crack 
            
59
propagation in weak snowpack layers: Insights from high-resolution, 
59
propagation in weak snowpack layers: Insights from high-resolution, 
            
60
high-speed photography, The Cryosphere Discuss. [preprint], 
60
high-speed photography, The Cryosphere Discuss. [preprint], 
            
61
https://doi.org/10.5194/tc-2020-360, in review, 2021.\r\n\r\n# 
61
https://doi.org/10.5194/tc-2020-360, in review, 2021.\r\n\r\n# 
            
62
Context: \r\nIn order to study crack propagation in weak snowpack 
62
Context: \r\nIn order to study crack propagation in weak snowpack 
            
63
layers in great detail, we recorded Propagation Saw Test (PST) 
63
layers in great detail, we recorded Propagation Saw Test (PST) 
            
64
experiments using a high-speed camera and applied digital image 
64
experiments using a high-speed camera and applied digital image 
            
65
correlation (DIC) to derive displacement and strain fields in the 
65
correlation (DIC) to derive displacement and strain fields in the 
            
66
slab, weak layer, and substrate. We demonstrated the versatility and 
66
slab, weak layer, and substrate. We demonstrated the versatility and 
            
67
accuracy of the DIC method by showing measurements from three PST 
67
accuracy of the DIC method by showing measurements from three PST 
            
68
experiments, resulting in slab fracture, crack arrest and full 
68
experiments, resulting in slab fracture, crack arrest and full 
            
69
propagation in the related publication. \r\n# Content:\r\n- 
69
propagation in the related publication. \r\n# Content:\r\n- 
            
70
Supplementary material for related publication\r\n- Ilustrative videos 
70
Supplementary material for related publication\r\n- Ilustrative videos 
            
71
showing crack propagation\r\n- High-speed recordings of the 
71
showing crack propagation\r\n- High-speed recordings of the 
            
72
Experiments \r\n(the raw .cine files are available upon 
72
Experiments \r\n(the raw .cine files are available upon 
            
73
request)\r\nProcessed Data containing:\r\n   - displacement, velocity 
73
request)\r\nProcessed Data containing:\r\n   - displacement, velocity 
            
74
and acceleration fields for the three PSTs\r\n   - speed and touchdown 
74
and acceleration fields for the three PSTs\r\n   - speed and touchdown 
            
75
dataset",
75
dataset",
            
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  "num_resources": 5,
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  "num_resources": 5,
            
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  "num_tags": 5,
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  "num_tags": 5,
            
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  "organization": {
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  "organization": {
            
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    "approval_status": "approved",
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    "approval_status": "approved",
            
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    "created": "2019-09-27T12:40:13.473824",
80
    "created": "2019-09-27T12:40:13.473824",
            
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    "description": "Snow avalanches \u2013 a type of fast-moving mass 
81
    "description": "Snow avalanches \u2013 a type of fast-moving mass 
            
82
movement \u2013 occur in snow covered mountain areas throughout the 
82
movement \u2013 occur in snow covered mountain areas throughout the 
            
83
world and may cause property damage and loss of life as they interfere 
83
world and may cause property damage and loss of life as they interfere 
            
84
with human activities. Most avalanches release from terrain steeper 
84
with human activities. Most avalanches release from terrain steeper 
            
85
than about 30\u00b0 during or soon after snow storms, or are triggered 
85
than about 30\u00b0 during or soon after snow storms, or are triggered 
            
86
by snow loading due to wind, or by a temperature change. Snow slab 
86
by snow loading due to wind, or by a temperature change. Snow slab 
            
87
avalanches can also be triggered artificially by, for example, people 
87
avalanches can also be triggered artificially by, for example, people 
            
88
(usually unintentionally) or intentionally by explosives used as part 
88
(usually unintentionally) or intentionally by explosives used as part 
            
89
of avalanche control programs. Today, most avalanche fatalities are 
89
of avalanche control programs. Today, most avalanche fatalities are 
            
90
recreationists. Independent of the triggering mode, the snowpack 
90
recreationists. Independent of the triggering mode, the snowpack 
            
91
layering is decisive for the instability of the snowpack which 
91
layering is decisive for the instability of the snowpack which 
            
92
consists of layers with varying properties. The complex microstructure 
92
consists of layers with varying properties. The complex microstructure 
            
93
of snow and spatial variations in snow layer properties across the 
93
of snow and spatial variations in snow layer properties across the 
            
94
terrain limit the predictability of snow avalanches. Even today, it is 
94
terrain limit the predictability of snow avalanches. Even today, it is 
            
95
not possible to predict the exact location, time and extent of an 
95
not possible to predict the exact location, time and extent of an 
            
96
avalanche event. Improving avalanche prediction requires a better 
96
avalanche event. Improving avalanche prediction requires a better 
            
97
understanding of the underlying processes. ",
97
understanding of the underlying processes. ",
            
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    "image_url": "2019-09-27-104013.456832slf.png",
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    "image_url": "2019-09-27-104013.456832slf.png",
            
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    "is_organization": true,
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    "name": "avalanche-formation",
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    "name": "avalanche-formation",
            
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    "state": "active",
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    "state": "active",
            
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    "title": "Avalanche Formation",
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    "title": "Avalanche Formation",
            
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    "type": "organization"
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    "type": "organization"
            
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  "private": false,
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  "publication": "{\"publication_year\": \"2021\", \"publisher\": 
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  "publication": "{\"publication_year\": \"2021\", \"publisher\": 
            
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\"EnviDat\"}",
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\"EnviDat\"}",
            
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  "publication_state": "published",
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  "publication_state": "published",
            
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  "related_datasets": "",
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  "related_datasets": "",
            
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  "related_publications": "https://doi.org/10.5194/tc-2020-360",
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  "related_publications": "https://doi.org/10.5194/tc-2020-360",
            
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  "relationships_as_object": [],
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      "description": "# Supplementary material to the publication 
122
      "description": "# Supplementary material to the publication 
            
123
Bergfeld et al 2021\r\n- description of the reverse crack\r\n- 
123
Bergfeld et al 2021\r\n- description of the reverse crack\r\n- 
            
124
additional snowpack parameters derived from the SMP measurements",
124
additional snowpack parameters derived from the SMP measurements",
            
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      "doi": "",
            
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      "name": "Supplementary material",
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      "name": "Supplementary material",
            
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      "package_id": "be3f7643-88ab-456c-9554-aa068ac76bb7",
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      "restricted": "{\"allowed_users\": \"\", \"level\": \"public\", 
            
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esource/89d474b4-0965-4b96-ac8e-ff80e5aa0bd5/download/supplement.zip",
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esource/89d474b4-0965-4b96-ac8e-ff80e5aa0bd5/download/supplement.zip",
            
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      "created": "2021-06-23T14:40:09.975436",
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      "created": "2021-06-23T14:40:09.975436",
            
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      "description": "The videos show the cracking process in three 
151
      "description": "The videos show the cracking process in three 
            
152
example Propagation Saw Tests (flat field). The upper panel shows 
152
example Propagation Saw Tests (flat field). The upper panel shows 
            
153
strain on top of the recorded movie frames. The second row shows 
153
strain on top of the recorded movie frames. The second row shows 
            
154
vertical (*w*, blue line) and horizontal (*u*, orange line) 
154
vertical (*w*, blue line) and horizontal (*u*, orange line) 
            
155
displacement fields. The third and fourth row show the first and 
155
displacement fields. The third and fourth row show the first and 
            
156
second time derivatives, namely the velocity and acceleration field. 
156
second time derivatives, namely the velocity and acceleration field. 
            
157
",
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",
            
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      "doi": "",
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ce/08523c06-7691-4a95-ac18-9782e3fc0306/download/cracking_videos.zip",
            
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      "description": "The videos are .mp4 exports of the raw files 
            
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(reduced 50 times in time)",
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(reduced 50 times in time)",
            
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      "doi": "",
            
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      "url_type": "upload"
            
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      "created": "2021-06-25T08:54:56.118375",
            
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      "description": "Data is stored as netcdf files as python/xarray 
212
      "description": "Data is stored as netcdf files as python/xarray 
            
213
Datasets.\r\nDatasets are self-explaining and contain the necessary 
213
Datasets.\r\nDatasets are self-explaining and contain the necessary 
            
214
information and metadata.\r\nInformation on how to load the netCDF 
214
information and metadata.\r\nInformation on how to load the netCDF 
            
215
files (datasets) can be found at 
215
files (datasets) can be found at 
            
216
\"http://xarray.pydata.org/en/stable/\"",
216
\"http://xarray.pydata.org/en/stable/\"",
            
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      "doi": "",
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      "doi": "",
            
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      "format": "NetCDF",
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      "format": "NetCDF",
            
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      "hash": "",
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      "hash": "",
            
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      "name": "Crack speed and Touchdown distance data",
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      "name": "Crack speed and Touchdown distance data",
            
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      "package_id": "be3f7643-88ab-456c-9554-aa068ac76bb7",
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\"mb\"}",
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      "restricted": "{\"level\": \"public\", \"allowed_users\": \"\", 
            
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\"shared_secret\": \"\"}",
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\"shared_secret\": \"\"}",
            
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      "state": "active",
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      "state": "active",
            
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      "url": 
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      "url": 
            
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a7-4c9f-84b8-ffd6f499f05f/download/speeds_and_touchdown_datasets.zip",
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a7-4c9f-84b8-ffd6f499f05f/download/speeds_and_touchdown_datasets.zip",
            
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      "url_type": "upload"
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      "url_type": "upload"
            
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    },
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    },
            
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      "created": "2021-06-25T19:00:05.241037",
            
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      "description": "Data contains the displacement, strain, velocity 
243
      "description": "Data contains the displacement, strain, velocity 
            
244
and acceleration fields measured during the crack propagation process 
244
and acceleration fields measured during the crack propagation process 
            
n
245
in our three example PSTs. Data is stored as netcdf files as 
n
245
in our three example Propagation Saw Tests (PSTs). Data is stored as 
            
246
python/xarray Datasets. Datasets are self-explaining and contain the 
246
netcdf files as python/xarray Datasets. Datasets are self-explaining 
            
247
necessary metadata (information on Camera settings, Digital Image 
247
and contain the necessary metadata (field notes on the PSTs, camera 
            
248
Corrrelation parameters, Preprocessing parameters)\r\nInformation on 
248
settings, Digital Image Corrrelation parameters, preprocessing 
            
249
how to load the netCDF files (datasets) can be found at 
249
parameters).\r\n\r\nInformation on how to load the netCDF files 
            
250
\"http://xarray.pydata.org/en/stable/\"",
250
(datasets) can be found at \"http://xarray.pydata.org/en/stable/\"",
            
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      "doi": "",
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      "doi": "",
            
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      "url": 
            
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ch/#/?prefix=slf/snow_avalanches_and_prevention/bergfeld_et_al_2021/",
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ch/#/?prefix=slf/snow_avalanches_and_prevention/bergfeld_et_al_2021/",
            
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  "tags": [
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  "tags": [
            
280
    {
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    {
            
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      "display_name": "CRACK PROPAGATION",
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      "display_name": "CRACK PROPAGATION",
            
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      "id": "cca7ca78-fafe-4329-af76-45610a10396b",
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      "id": "cca7ca78-fafe-4329-af76-45610a10396b",
            
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      "name": "CRACK PROPAGATION",
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      "name": "CRACK PROPAGATION",
            
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    {
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      "display_name": "EXPERIMENT",
            
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      "id": "387726dc-dbe2-4c70-bdf1-414144a5ed04",
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      "id": "387726dc-dbe2-4c70-bdf1-414144a5ed04",
            
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    {
            
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      "display_name": "SNOW",
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      "display_name": "SNOW",
            
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      "id": "c4e9ea3f-6149-45ce-8631-c872b96a9537",
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      "id": "c4e9ea3f-6149-45ce-8631-c872b96a9537",
            
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      "name": "SNOW",
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    {
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    {
            
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      "display_name": "SNOW AVALANCHE",
            
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      "id": "6083a08c-fd24-4e5a-bb20-559021b89c92",
            
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      "name": "SNOW AVALANCHE",
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      "name": "SNOW AVALANCHE",
            
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      "state": "active",
            
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    },
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    {
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    {
            
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      "display_name": "SNOW MECHANICS",
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      "display_name": "SNOW MECHANICS",
            
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      "id": "31bab9c5-b32e-452d-bce1-f7500696beab",
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      "id": "31bab9c5-b32e-452d-bce1-f7500696beab",
            
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      "name": "SNOW MECHANICS",
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      "name": "SNOW MECHANICS",
            
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      "state": "active",
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      "state": "active",
            
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      "vocabulary_id": null
            
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    }
314
    }
            
315
  ],
315
  ],
            
316
  "title": "Crack propagation in weak snowpack layers: Insights from 
316
  "title": "Crack propagation in weak snowpack layers: Insights from 
            
317
high-speed photography",
317
high-speed photography",
            
318
  "type": "dataset",
318
  "type": "dataset",
            
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  "url": null,
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  "url": null,
            
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  "version": "1.0"
320
  "version": "1.0"
            
321
}
321
}