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Godon, Cécile; Guillon, Hervé; Buoncristiani, Jean-François; Mugnier, Jean-Louis (2013): Grain size distributions of Bossons stream saltation load (France) in 2009. PANGAEA, https://doi.org/10.1594/PANGAEA.835989, In supplement to: Godon, Cécile (2013): L'érosion dans les environnements glaciaires : exemple du Glacier des Bossons (Massif du Mont-Blanc, Haute-Savoie, France) = Erosion in glacial environments : example of the Glacier des Bossons (Massif du Mont-Blanc, Haute-Savoie, France). Université de Grenoble, v1, 212 pp, https://theses.hal.science/tel-00909603

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Coverage:
Latitude: 45.880000 * Longitude: 6.860000
Date/Time Start: 2009-07-02T00:00:00 * Date/Time End: 2009-09-12T00:00:00
Event(s):
Glacier_des_Bossons * Latitude: 45.880000 * Longitude: 6.860000 * Location: Bossons Glacier, Massif du Mont-Blanc, Haute-Savoie, France
Comment:
This dataset presents sediment load grain size distributions of Bossons stream, one of the subglacial stream draining Bossons glacier meltwater.
Bossons glacier is rapidly retreating and its proglacial area is deglaciated for ~30 years. Within this area, Bossons stream flows through an alluvial plain with day-to-day morphological changes. It is an intriguing location to study periglacial and proglacial erosion processes which requires to characterize transported sediments. Since coarse particles are difficult to monitor in such alpine stream environment, this dataset focuses on fine grained particles in suspension load, saltation load 5 cm from bed and bedload.
In 2009, a sediment trap constituted by a sole 1.5L-bottle was used to acquire 68 samples. The trap was pickep up every morning (9h00) and evening (20h00) between July 2nd and September 13th 2009.
After decantation, drying and weighting, Grain Size Distribution (GSD) of each samples has been determined by laser micro-granulometry. Some sample were analyzed twice to ensure data consistency. Only 12 bedload samples have been analyzed.
Saltating particles GSD is unimodal and dominant mode is always greater than 500 µm. Hence, on normal hydrological condition, suspended load, saltating load and bedload correspond respectively to silts, medium to coarse sands and medium to coarse sands together with granular gravels.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DATE/TIMEDate/TimeGeocode
2Date/time endDate/time endGuillon, Hervé
3Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.013-0.010 µm
4Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.016-0.126 µm
5Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.020-0.157 µm
6Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.026-0.020 µm
7Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.032-0.026 µm
8Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.041-0.032 µm
9Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.052-0.041 µm
10Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.065-0.052 µm
11Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.083-0.065 µm
12Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.105-0.083 µm
13Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.132-0.105 µm
14Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.167-0.132 µm
15Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.211-0.167 µm
16Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.267-0.211 µm
17Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.338-0.267 µm
18Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.428-0.338 µm
19Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.541-0.428 µm
20Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.684-0.541 µm
21Size fractionSize fraction%Guillon, HervéLaser micro-granulometry0.865-0.684 µm
22Size fractionSize fraction%Guillon, HervéLaser micro-granulometry1.094-0.865 µm
23Size fractionSize fraction%Guillon, HervéLaser micro-granulometry1.383-1.094 µm
24Size fractionSize fraction%Guillon, HervéLaser micro-granulometry1.749-1.383 µm
25Size fractionSize fraction%Guillon, HervéLaser micro-granulometry2.211-1.749 µm
26Size fractionSize fraction%Guillon, HervéLaser micro-granulometry2.797-2.211 µm
27Size fractionSize fraction%Guillon, HervéLaser micro-granulometry3.536-2.797 µm
28Size fractionSize fraction%Guillon, HervéLaser micro-granulometry4.472-3.536 µm
29Size fractionSize fraction%Guillon, HervéLaser micro-granulometry5.655-4.472 µm
30Size fractionSize fraction%Guillon, HervéLaser micro-granulometry7.152-5.655 µm
31Size fractionSize fraction%Guillon, HervéLaser micro-granulometry9.044-7.152 µm
32Size fractionSize fraction%Guillon, HervéLaser micro-granulometry11.436-9.044 µm
33Size fractionSize fraction%Guillon, HervéLaser micro-granulometry14.462-11.436 µm
34Size fractionSize fraction%Guillon, HervéLaser micro-granulometry18.288-14.462 µm
35Size fractionSize fraction%Guillon, HervéLaser micro-granulometry23.127-18.288 µm
36Size fractionSize fraction%Guillon, HervéLaser micro-granulometry29.245-23.127 µm
37Size fractionSize fraction%Guillon, HervéLaser micro-granulometry36.983-29.245 µm
38Size fractionSize fraction%Guillon, HervéLaser micro-granulometry46.767-36.983 µm
39Size fractionSize fraction%Guillon, HervéLaser micro-granulometry59.141-46.767 µm
40Size fractionSize fraction%Guillon, HervéLaser micro-granulometry74.788-59.141 µm
41Size fractionSize fraction%Guillon, HervéLaser micro-granulometry94.574-74.788 µm
42Size fractionSize fraction%Guillon, HervéLaser micro-granulometry119.596-94.574 µm
43Size fractionSize fraction%Guillon, HervéLaser micro-granulometry151.237-119.596 µm
44Size fractionSize fraction%Guillon, HervéLaser micro-granulometry191.25-151.237 µm
45Size fractionSize fraction%Guillon, HervéLaser micro-granulometry241.849-191.25 µm
46Size fractionSize fraction%Guillon, HervéLaser micro-granulometry305.835-241.849 µm
47Size fractionSize fraction%Guillon, HervéLaser micro-granulometry386.75-305.835 µm
48Size fractionSize fraction%Guillon, HervéLaser micro-granulometry489.072-386.75 µm
49Size fractionSize fraction%Guillon, HervéLaser micro-granulometry618.466-489.072 µm
50Size fractionSize fraction%Guillon, HervéLaser micro-granulometry782.093-618.466 µm
51Size fractionSize fraction%Guillon, HervéLaser micro-granulometry989.012-782.093 µm
52Size fractionSize fraction%Guillon, HervéLaser micro-granulometry1250.674-989.012 µm
53Size fractionSize fraction%Guillon, HervéLaser micro-granulometry1581.565-1250.674 µm
54Size fractionSize fraction%Guillon, HervéLaser micro-granulometry2000-1581.656 µm
Size:
3604 data points

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