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Godon, Cécile; Guillon, Hervé; Buoncristiani, Jean-François; Mugnier, Jean-Louis (2013): Grain size distributions of Bossons stream suspended load (France) in 2010 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.835988, 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: 2010-06-10T17:45:00 * Date/Time End: 2010-08-03T13:00:00
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.
Grain size analysis of suspended particles requires few grams of material. Ten liter of water were sampled at the same location in Bossons stream on four summer days (July 2nd (n=5), July 16th (n=2), August 2nd (n=1) and August 3th 2010 (n=1)) and one flood event (June 10th 2010 (n=1)).
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.
uspended particles GSD is bimodal when sand can be transported, unimodal otherwise. The dominant mode is 18 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
2ReplicateReplGuillon, Hervé
3Size fraction 0.025-0.020 µm0.025-0.02 µm%Guillon, HervéLaser micro-granulometry
4Size fraction 0.0315-0.025 µm0.0315-0.025 µm%Guillon, HervéLaser micro-granulometry
5Size fraction 0.040-0.0315 µm0.04-0.0315 µm%Guillon, HervéLaser micro-granulometry
6Size fraction 0.050-0.040 µm0.05-0.04 µm%Guillon, HervéLaser micro-granulometry
7Size fraction 0.063-0.050 µm0.063-0.05 µm%Guillon, HervéLaser micro-granulometry
8Size fraction 0.080-0.063 µm0.08-0.063 µm%Guillon, HervéLaser micro-granulometry
9Size fraction 0.100-0.080 µm0.1-0.08 µm%Guillon, HervéLaser micro-granulometry
10Size fraction 0.125-0.100 µm0.125-0.1 µm%Guillon, HervéLaser micro-granulometry
11Size fraction 0.160-0.125 µm0.16-0.125 µm%Guillon, HervéLaser micro-granulometry
12Size fraction 0.200-0.160 µm0.2-0.16 µm%Guillon, HervéLaser micro-granulometry
13Size fraction 0.250-0.200 µm0.25-0.2 µm%Guillon, HervéLaser micro-granulometry
14Size fraction 0.315-0.250 µm0.315-0.25 µm%Guillon, HervéLaser micro-granulometry
15Size fraction 0.400-0.315 µm0.400-0.315 µm%Guillon, HervéLaser micro-granulometry
16Size fraction 0.500-0.400 µm0.5-0.4 µm%Guillon, HervéLaser micro-granulometry
17Size fraction 0.630-0.500 µm0.630-0.500 µm%Guillon, HervéLaser micro-granulometry
18Size fraction 0.800-0.630 µm0.8-0.63 µm%Guillon, HervéLaser micro-granulometry
19Size fraction 1.000-0.800 µm1-0.8 µm%Guillon, HervéLaser micro-granulometry
20Size fraction 1.250-1.000 µm1.25-1 µm%Guillon, HervéLaser micro-granulometry
21Size fraction 1.6-1.25 µm1.6-1.25 µm%Guillon, HervéLaser micro-granulometry
22Size fraction 2.0-1.6 µm2.0-1.6 µm%Guillon, HervéLaser micro-granulometry
23Size fraction 0.0025-0.002 mm2.5-2 µm%Guillon, HervéLaser micro-granulometry
24Size fraction 3.15-2.5 µm3.15-2.5 µm%Guillon, HervéLaser micro-granulometry
25Size fraction 4.0-3.15 µm4-3.15 µm%Guillon, HervéLaser micro-granulometry
26Size fraction 0.005-0.004 mm5-4 µm%Guillon, HervéLaser micro-granulometry
27Size fraction 0.0063-0.005 mm6.3-5 µm%Guillon, HervéLaser micro-granulometry
28Size fraction 0.008-0.0063 mm8-6.3 µm%Guillon, HervéLaser micro-granulometry
29Size fraction 0.010-0.008 mm10-8 µm%Guillon, HervéLaser micro-granulometry
30Size fraction 12.5-10.0 µm12.5-10 µm%Guillon, HervéLaser micro-granulometry
31Size fraction 16.0-12.5 µm16-12.5 µm%Guillon, HervéLaser micro-granulometry
32Size fraction 20-16 µm20-16 µm%Guillon, HervéLaser micro-granulometry
33Size fraction 25-20 µm25-20 µm%Guillon, HervéLaser micro-granulometry
34Size fraction 31.5-25 µm31.5-25 µm%Guillon, HervéLaser micro-granulometry
35Size fraction 40-31.5 µm40-31.5 µm%Guillon, HervéLaser micro-granulometry
36Size fraction 0.050-0.040 mm50-40 µm%Guillon, HervéLaser micro-granulometry
37Size fraction 0.063-0.050 mm63-50 µm%Guillon, HervéLaser micro-granulometry
38Size fraction 0.080-0.063 mm80-63 µm%Guillon, HervéLaser micro-granulometry
39Size fraction 0.100-0.080 mm100-80 µm%Guillon, HervéLaser micro-granulometry
40Size fraction 0.125-0.100 mm125-100 µm%Guillon, HervéLaser micro-granulometry
41Size fraction 0.160-0.125 mm160-125 µm%Guillon, HervéLaser micro-granulometry
42Size fraction 0.200-0.160 mm200-160 µm%Guillon, HervéLaser micro-granulometry
43Size fraction 0.250-0.200 mm250-200 µm%Guillon, HervéLaser micro-granulometry
44Size fraction 0.315-0.250 mm315-250 µm%Guillon, HervéLaser micro-granulometry
45Size fraction 0.400-0.315 mm400-315 µm%Guillon, HervéLaser micro-granulometry
46Size fraction 0.500-0.400 mm500-400 µm%Guillon, HervéLaser micro-granulometry
47Size fraction 0.630-0.500 mm630-500 µm%Guillon, HervéLaser micro-granulometry
48Size fraction 0.800-0.630 mm800-630 µm%Guillon, HervéLaser micro-granulometry
49Size fraction 1.000-0.800 mm1-0.8 mm%Guillon, HervéLaser micro-granulometry
50Size fraction 1.250-1.000 mm1.25-1 mm%Guillon, HervéLaser micro-granulometry
51Size fraction 1.600-1.250 mm1.6-1.25 mm%Guillon, HervéLaser micro-granulometry
52Size fraction 2.0-1.6 mm2.0-1.6 mm%Guillon, HervéLaser micro-granulometry
Size:
663 data points

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