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  "author": "[{\"affiliation\": \"WSL-Institut f\\u00fcr Schnee- und 
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  "author": "[{\"affiliation\": \"WSL-Institut f\\u00fcr Schnee- und 
            
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Lawinenforschung SLF\", \"affiliation_02\": \"\", \"affiliation_03\": 
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Lawinenforschung SLF\", \"affiliation_02\": \"\", \"affiliation_03\": 
            
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\"\", \"email\": \"sundu.kavitha@slf.ch\", \"given_name\": 
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\"\", \"email\": \"sundu.kavitha@slf.ch\", \"given_name\": 
            
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\"Kavitha\", \"identifier\": \"0000-0002-0445-8591\", \"name\": 
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\"Kavitha\", \"identifier\": \"0000-0002-0445-8591\", \"name\": 
            
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\"Sundu\"}, {\"affiliation\": \"WSL Institute for Snow and Avalanche 
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\"Sundu\"}, {\"affiliation\": \"WSL Institute for Snow and Avalanche 
            
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Research SLF\", \"affiliation_02\": \"\", \"affiliation_03\": \"\", 
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Research SLF\", \"affiliation_02\": \"\", \"affiliation_03\": \"\", 
            
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\"email\": \"rafael.ottersberg@unibe.ch\", \"given_name\": \"Rafael\", 
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\"email\": \"rafael.ottersberg@unibe.ch\", \"given_name\": \"Rafael\", 
            
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\"identifier\": \"\", \"name\": \"Ottersberg\"}, {\"affiliation\": 
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\"identifier\": \"\", \"name\": \"Ottersberg\"}, {\"affiliation\": 
            
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\"WSL Institute for Snow and Avalanche Research SLF\", 
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\"WSL Institute for Snow and Avalanche Research SLF\", 
            
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\"affiliation_02\": \"\", \"affiliation_03\": \"\", \"email\": 
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\"affiliation_02\": \"\", \"affiliation_03\": \"\", \"email\": 
            
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\"jaggi@slf.ch\", \"given_name\": \"Matthias\", \"identifier\": \"\", 
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\"jaggi@slf.ch\", \"given_name\": \"Matthias\", \"identifier\": \"\", 
            
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\"name\": \"Jaggi\"}, {\"affiliation\": \"WSL Institute for Snow and 
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\"name\": \"Jaggi\"}, {\"affiliation\": \"WSL Institute for Snow and 
            
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Avalanche Research SLF\", \"affiliation_02\": \"\", 
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Avalanche Research SLF\", \"affiliation_02\": \"\", 
            
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\"affiliation_03\": \"\", \"email\": \"loewe@slf.ch\", \"given_name\": 
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\"affiliation_03\": \"\", \"email\": \"loewe@slf.ch\", \"given_name\": 
            
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\"Henning\", \"identifier\": \"0000-0001-7515-6809\", \"name\": 
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\"Henning\", \"identifier\": \"0000-0001-7515-6809\", \"name\": 
            
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\"L\\u00f6we\"}]",
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\"L\\u00f6we\"}]",
            
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  "author_email": null,
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  "creator_user_id": "38416a29-a1f6-4b39-831a-d40c1f536159",
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  "creator_user_id": "38416a29-a1f6-4b39-831a-d40c1f536159",
            
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  "date": "[{\"date\": \"2021-08-10\", \"date_type\": \"created\", 
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  "date": "[{\"date\": \"2021-08-10\", \"date_type\": \"created\", 
            
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\"end_date\": \"2023-01-16\"}]",
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\"end_date\": \"2023-01-16\"}]",
            
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  "doi": "10.16904/envidat.436",
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  "doi": "10.16904/envidat.436",
            
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  "funding": "[{\"grant_number\": \"200020_178831\", \"institution\": 
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  "funding": "[{\"grant_number\": \"200020_178831\", \"institution\": 
            
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\"SNSF\", \"institution_url\": 
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\"SNSF\", \"institution_url\": 
            
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\"https://data.snf.ch/grants/grant/178831\"}]",
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\"https://data.snf.ch/grants/grant/178831\"}]",
            
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  "groups": [],
            
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  "id": "2fbce191-4283-4b68-aa4c-ad90723146ed",
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  "id": "2fbce191-4283-4b68-aa4c-ad90723146ed",
            
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  "isopen": true,
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  "isopen": true,
            
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  "language": "en",
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  "language": "en",
            
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  "license_id": "odc-odbl",
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  "license_id": "odc-odbl",
            
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  "license_title": "ODbL with Database Contents License (DbCL)",
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  "license_title": "ODbL with Database Contents License (DbCL)",
            
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  "license_url": "https://opendefinition.org/licenses/odc-odbl",
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  "license_url": "https://opendefinition.org/licenses/odc-odbl",
            
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  "maintainer": "{\"affiliation\": \"WSL Institute for Snow and 
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  "maintainer": "{\"affiliation\": \"WSL Institute for Snow and 
            
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Avalanche Research SLF\", \"email\": \"loewe@slf.ch\", \"given_name\": 
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Avalanche Research SLF\", \"email\": \"loewe@slf.ch\", \"given_name\": 
            
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\"Henning\", \"identifier\": \"0000-0001-7515-6809\", \"name\": 
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\"Henning\", \"identifier\": \"0000-0001-7515-6809\", \"name\": 
            
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\"L\u00f6we\"}",
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\"L\u00f6we\"}",
            
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  "maintainer_email": null,
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  "maintainer_email": null,
            
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  "metadata_created": "2023-10-10T08:45:00.817542",
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  "metadata_created": "2023-10-10T08:45:00.817542",
            
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  "metadata_modified": "2023-10-10T17:57:20.852885",
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  "metadata_modified": "2023-10-10T18:11:24.920008",
            
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  "name": "slow-snow-compression",
40
  "name": "slow-snow-compression",
            
41
  "notes": "We conducted consecutive loading-relaxation experiments at 
41
  "notes": "We conducted consecutive loading-relaxation experiments at 
            
42
low strain rates to study the viscoplastic behavior of the intact ice 
42
low strain rates to study the viscoplastic behavior of the intact ice 
            
43
matrix in snow. The experiments were conducted using a 
43
matrix in snow. The experiments were conducted using a 
            
44
micro-compression stage within the X-ray tomography scanner in the SLF 
44
micro-compression stage within the X-ray tomography scanner in the SLF 
            
45
cold laboratory. \r\n\r\nNext, to evaluate the experiments, a novel, 
45
cold laboratory. \r\n\r\nNext, to evaluate the experiments, a novel, 
            
46
implicit solution of a transient scalar model was developed to 
46
implicit solution of a transient scalar model was developed to 
            
47
estimate the stress exponent and time scales in the effective creep 
47
estimate the stress exponent and time scales in the effective creep 
            
48
relation (Glen's law). The result reveals that, for the first time, a 
48
relation (Glen's law). The result reveals that, for the first time, a 
            
49
transition in the exponent in Glen's law depends on geometrical grain 
49
transition in the exponent in Glen's law depends on geometrical grain 
            
50
size. A cross-over of stress exponent $n=1.9$ for fine grains to 
50
size. A cross-over of stress exponent $n=1.9$ for fine grains to 
            
51
$n=4.4$ for coarse grains is interpreted as a transition from grain 
51
$n=4.4$ for coarse grains is interpreted as a transition from grain 
            
52
boundary sliding to dislocation creep. \r\n\r\n\r\nThe dataset 
52
boundary sliding to dislocation creep. \r\n\r\n\r\nThe dataset 
            
53
includes compression force data from 11 experiments and corresponding 
53
includes compression force data from 11 experiments and corresponding 
            
54
3D image data from tomography scans.\r\n",
54
3D image data from tomography scans.\r\n",
            
n
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  "num_resources": 2,
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  "num_resources": 3,
            
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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": "2018-11-15T15:27:32.106204",
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    "created": "2018-11-15T15:27:32.106204",
            
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    "description": "The core topic of the team \"Snow Physics\" is 
60
    "description": "The core topic of the team \"Snow Physics\" is 
            
61
structure and property of snow and firn at different scales. Our most 
61
structure and property of snow and firn at different scales. Our most 
            
62
important tools in the cold laboratory are micro-computed tomography 
62
important tools in the cold laboratory are micro-computed tomography 
            
63
(micro-CT), nature-identical snow production, and our in-house 
63
(micro-CT), nature-identical snow production, and our in-house 
            
64
designed snow-breeders.\r\n\r\nBased on the three-dimensional 
64
designed snow-breeders.\r\n\r\nBased on the three-dimensional 
            
65
representation of snow, we can now calculate fundamental structural 
65
representation of snow, we can now calculate fundamental structural 
            
66
parameters as density variations at a spatial resolution of a few 
66
parameters as density variations at a spatial resolution of a few 
            
67
millimeters, e.g. revealing the finely layered structure of weak 
67
millimeters, e.g. revealing the finely layered structure of weak 
            
68
layers or of polar firn. In addition, the readily available data are 
68
layers or of polar firn. In addition, the readily available data are 
            
69
used to calculate the correlation function in all 3D, which enables a 
69
used to calculate the correlation function in all 3D, which enables a 
            
70
deeper understanding of the interactions between structure and 
70
deeper understanding of the interactions between structure and 
            
71
functional properties, e.g. for microwaves.\r\n\r\nIn addition, we are 
71
functional properties, e.g. for microwaves.\r\n\r\nIn addition, we are 
            
72
able to use the exact microstructure of snow for numerical 
72
able to use the exact microstructure of snow for numerical 
            
73
simulations. Our own or adapted codes allow to calculate thermal 
73
simulations. Our own or adapted codes allow to calculate thermal 
            
74
conductivity, mechanical properties, and optical properties. Direct 
74
conductivity, mechanical properties, and optical properties. Direct 
            
75
numerical simulation proves to be a highly valuable tool to understand 
75
numerical simulation proves to be a highly valuable tool to understand 
            
76
the complexity of snow.\r\n\r\nOur micro-CT is equipped with the 
76
the complexity of snow.\r\n\r\nOur micro-CT is equipped with the 
            
77
ability to perform time-lapse tomography using so called 
77
ability to perform time-lapse tomography using so called 
            
78
snow-breeders. The snow breeder made the first in-situ time-lapse 
78
snow-breeders. The snow breeder made the first in-situ time-lapse 
            
79
movie of metamorphosing snow under a temperature gradient 
79
movie of metamorphosing snow under a temperature gradient 
            
80
possible.\r\n\r\nOur developments don't stop at the microstructure. 
80
possible.\r\n\r\nOur developments don't stop at the microstructure. 
            
81
The quantification of snow properties at the larger scale of a snow 
81
The quantification of snow properties at the larger scale of a snow 
            
82
profile or on a field requires new techniques to link the micro- to 
82
profile or on a field requires new techniques to link the micro- to 
            
83
the macro-scale. For this purpose we developed the SnowMicroPen, a 
83
the macro-scale. For this purpose we developed the SnowMicroPen, a 
            
84
high-resolution penetrometer, which is able to discern different snow 
84
high-resolution penetrometer, which is able to discern different snow 
            
85
types using signal processing. Near-infrared photography has become a 
85
types using signal processing. Near-infrared photography has become a 
            
86
standard tool to quantify spatial variation of the specific surface 
86
standard tool to quantify spatial variation of the specific surface 
            
87
area, and, concurrently, the equivalent optical grain size. Currently, 
87
area, and, concurrently, the equivalent optical grain size. Currently, 
            
88
we are developing new optical techniques which try to measure density 
88
we are developing new optical techniques which try to measure density 
            
89
and specific surface area at the same time.",
89
and specific surface area at the same time.",
            
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    "image_url": 
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    "image_url": 
            
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s://www.envidat.ch/uploads/group/2016-05-24-141521.837240logoslf.png",
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    "is_organization": true,
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    "name": "snow-physics",
            
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    "state": "active",
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    "state": "active",
            
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    "title": "Snow Physics",
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    "title": "Snow Physics",
            
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  "publication": "{\"publication_year\": \"2023\", \"publisher\": 
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  "publication": "{\"publication_year\": \"2023\", \"publisher\": 
            
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\"EnviDat\"}",
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\"EnviDat\"}",
            
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  "publication_state": "pub_pending",
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  "publication_state": "pub_pending",
            
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  "related_datasets": "",
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  "related_datasets": "",
            
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      "description": "README file gives an overview of the 
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      "created": "2023-10-10T09:08:33.461140",
            
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      "description": "Compression experiments, X-ray images and with 
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      "description": "Compression experiments, X-ray images and with 
            
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