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Sources of the Aeolian Material in Periglacial Conditions Based on Quartz Grain Analysis, Ebba Valley, Svalbard

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06 nov 2024
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Fig. 1.

Orthophotomap of the study area with nine aeolian deposition test sites (1–9) located within the Ebba Valley. Weather stations (E – Ebba Valley, S – Sven Glacier, and P – Pyramiden city) are marked with black stars. Orthophotomap source – Norwegian Polar Institute. Inner map shows the location of the study area (black arrows and circle) in the central Spitsbergen, High Arctic.
Orthophotomap of the study area with nine aeolian deposition test sites (1–9) located within the Ebba Valley. Weather stations (E – Ebba Valley, S – Sven Glacier, and P – Pyramiden city) are marked with black stars. Orthophotomap source – Norwegian Polar Institute. Inner map shows the location of the study area (black arrows and circle) in the central Spitsbergen, High Arctic.

Fig. 2.

Geomorphological sketch of the study area (Ebba Valley, Svalbard). Modified after the original figure by Rachlewicz (2009).
Geomorphological sketch of the study area (Ebba Valley, Svalbard). Modified after the original figure by Rachlewicz (2009).

Fig. 3.

Percentage of quartz grains in the Ebba Valley in 2015–2018 divided into grain rounding and matting classes according to Cailleux (1942) with modification by Goździk (1995) and Mycielska-Dowgiałło and Woronko (1998).
Percentage of quartz grains in the Ebba Valley in 2015–2018 divided into grain rounding and matting classes according to Cailleux (1942) with modification by Goździk (1995) and Mycielska-Dowgiałło and Woronko (1998).

Fig. 4.

Percentage of quartz grains in the years 2015–2018 collected in Ebba Valley divided into grain rounding and matting classes according to Cailleux (1942) with modification by Goździk (1995) and Mycielska-Dowgiałło and Woronko (1998) at nine test sites.
Percentage of quartz grains in the years 2015–2018 collected in Ebba Valley divided into grain rounding and matting classes according to Cailleux (1942) with modification by Goździk (1995) and Mycielska-Dowgiałło and Woronko (1998) at nine test sites.

Total number of quartz grains collected in the Ebba Valley in 2015–2018 divided into grain rounding and matting classes according to Cailleux (1942) with modification by Goździk (1995) and Mycielska-Dow-giałło and Woronko (1998)_

Year Class
C EL EM–EL RM EM–RM NU Total
2015 83 45 213 55 215 126 737
2016 55 29 125 37 73 67 386
2017 40 8 64 27 59 14 212
2018 47 88 197 110 177 20 639

Total number of quartz grains collected in the Ebba Valley in 2015–2018 divided into grain rounding and matting classes according to Cailleux (1942) with modification by Goździk (1995) and Mycielska-Dow-giałło and Woronko (1998) at nine test sites_

Test site name Class
C EL EM–EL RM EM–RM NU Total
The mouth of the valley with dense vegetation
1. Wet tundra 4 2 4 6 8 0 24
2. Dry tundra 2 0 2 1 7 2 14
The middle part of the valley floor with little or no vegetation
3. Leeward slope 9 0 11 3 7 4 34
4. Highest marine terrace top 12 8 31 16 26 11 104
5. Windward slope 38 66 151 82 139 54 530
6. Sandy surface 66 55 202 70 172 80 645
7. Central part of the valley 47 26 90 21 67 26 277
The upper part of the valley without vegetation cover
8. Sandur 12 5 23 20 28 14 102
9. Moraine 35 8 85 10 70 36 244

Percentage of quartz grains collected in the Ebba Valley in 2015–2018 divided into grain rounding and matting classes according to Cailleux (1942) with modification by Goździk (1995) and Mycielska-Dowgiałło and Woronko (1998) at nine test sites_

Test site name Class
C EL EM–EL RM EM–RM NU
The mouth of the valley with dense vegetation
1. Wet tundra 16.7 8.3 16.7 25.0 33.3 0.0
2. Dry tundra 14.3 0.0 14.3 7.1 50.0 14.3
The middle part of the valley floor with little or no vegetation
3. Leeward slope 26.5 0.0 32.4 8.8 20.6 11.8
4. Highest marine terrace top 11.5 7.7 29.8 15.4 25.0 10.6
5. Windward slope 7.2 12.5 28.5 15.5 26.2 10.2
6. Sandy surface 10.2 8.5 31.3 10.9 26.7 12.4
7. Central part of the valley 17.0 9.4 32.5 7.6 24.2 9.4
The upper part of the valley without vegetation cover
8. Sandur 11.8 4.9 22.5 19.6 27.5 13.7
9. Moraine 14.3 3.3 34.8 4.1 28.7 14.8

Percentage of quartz grains collected in the Ebba Valley in 2015–2018 divided into grain rounding and matting classes according to Cailleux (1942) with modification by Goździk (1995) and Mycielska-Dow-giałło and Woronko (1998)_

Year Class
C EL EM–EL RM EM–RM NU
2015 11.3 6.1 28.9 7.5 29.2 17.1
2016 14.2 7.5 32.4 9.6 18.9 17.4
2017 18.9 3.8 30.2 12.7 27.8 6.6
2018 7.4 13.8 30.8 17.2 27.7 3.1

Spearman’s rank correlation coeffcient between different quartz grain types collected in the Ebba Valley and different meteorological variables_ The red colour indicates a positive correlation_ The blue colour indicates a negative correlation_

Parameter C EL EM–EL RM EM–RM NU
Average wind speed Ebba Valley –0.01p = 0.92 –0.02p = 0.87 –0.03p = 0.75 –0,14p = 0.19 –0.05p = 0.63 0.49p < 0.01
Average wind speed Pyramiden 0.08p = 0.43 –0.31p < 0.01 –0.22p = 0.04 –0.08p = 0.47 0p = 0.99 –0.01p = 0.92
Average wind speed Sven Glacier –0.04p = 0.71 –0.1p = 0.34 0.04p = 0.73 –0.18p = 0.08 –0.13p = 0.23 0.45p < 0.01
Average temperature Ebba Valley –0.07p = 0.52 0.31p < 0.01 0.21p = 0.05 0.03p = 0.76 0.01p = 0.91 0.23p = 0.03
Totalprecipitation Longyearbyen –0.08p = 0.43 0.31p < 0.01 0.22p = 0.04 0.08p = 0.47 0p = 0.99 0.01p = 0.92
Average air humidity Ebba Valley –0.08p = 0.46 0.08p = 0.47 0.11p = 0.3 0.05p = 0.66 –0.07p = 0.5 –0.26p = 0.01

j_quageo-2024-0034_app-tab_001

2015 Trap 1 Trap 2 Trap 3
C EL EM–EL RM EM–RM NU C EL EM–EL RM EM–RM NU C EL EM–EL RM EM–RM NU
Wet tundra 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Dry tundra 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Leeward slope 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Highest marine terrace top 1 1 6 4 4 3 2 0 2 3 5 1 3 1 5 1 3 0
Windward slope 3 10 13 21 30 7 2 9 8 5 15 5 5 0 7 0 6 5
Sandy surface 26 0 68 5 65 57 9 2 13 0 10 4
Central part 10 3 30 3 27 3 2 8 10 3 6 5 3 4 7 3 5 4
Sandur 3 2 4 2 4 2 1 2 5 1 4 4 0 0 3 2 0 1
Moraine 10 1 18 1 21 13 3 2 6 0 8 9 0 0 8 0 2 3
2016 Trap 1 Trap 2 Trap 3
C EL EM–EL RM EM–RM NU C EL EM–EL RM EM–RM NU C EL EM–EL RM EM–RM NU
Wet tundra 2 0 3 2 2 0 0 0 0 0 1 0 0 0 0 0 0 0
Dry tundra 0 0 1 0 0 1 0 0 1 0 1 0 0 0 0 0 0 0
Leeward slope 4 0 4 0 2 3 0 0 0 0 1 1 1 0 0 0 0 0
Highest marine terrace top 0 1 0 1 0 0 0 0 1 1 2 0 0 0 4 3 1 0
Windward slope 7 6 21 9 13 6 7 3 11 0 6 11 4 1 22 0 5 15
Sandy surface 1 3 3 2 3 1 6 4 10 7 8 6 4 9 19 10 12 3
Central part 6 0 7 2 5 8 5 2 5 0 3 0
Sandur 1 0 1 0 0 1 0 0 0 0 0 0 0 0 1 0 0 1
Moraine 0 0 0 0 1 3 5 0 7 0 3 5 2 0 4 0 4 2
2017 Trap 1 Trap 2 Trap 3
C EL EM–EL RM EM–RM NU C EL EM–EL RM EM–RM NU C EL EM–EL RM EM–RM NU
Wet tundra 1 0 0 0 2 0 0 0 0 1 0 0 0 0 0 0 1 0
Dry tundra 0 0 0 0 2 1 2 0 0 1 2 0 0 0 0 0 1 0
Leeward slope 2 0 1 1 1 0 0 0 0 1 0 0 2 0 1 0 0 0
Highest marine terrace top 0 0 1 0 2 3 1 1 3 0 1 0 1 0 0 0 3 0
Windward slope 1 1 3 2 2 0 1 2 7 3 6 2 1 0 11 4 4 0
Sandy surface 2 0 1 1 1 0 0 1 0 1 0 0 5 0 4 2 2 2
Central part 4 1 7 0 2 1 5 0 3 1 3 0 3 0 5 2 4 0
Sandur 1 0 1 0 2 2 1 1 2 3 2 1 0 0 1 1 4 1
Moraine 3 0 5 0 5 0 0 1 6 1 5 1 4 0 2 2 2 0
2018 Trap 1 Trap 2 Trap 3
C EL EM–EL RM EM–RM NU C EL EM–EL RM EM–RM NU C EL EM–EL RM EM–RM NU
Wet tundra 1 0 1 0 0 0 0 0 0 0 0 0 0 2 0 3 2 0
Dry tundra 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0
Leeward slope 0 0 0 0 0 0 0 0 1 0 0 0 0 0 4 0 3 0
Highest marine terrace top 2 3 5 2 4 4 1 0 1 0 0 0 1 1 3 1 1 0
Windward slope 2 14 14 4 10 0 1 11 16 10 8 1 4 9 18 24 34 2
Sandy surface 3 12 32 5 22 1 5 18 41 10 16 4 5 6 11 27 33 2
Central part 2 3 3 2 4 1 3 3 4 3 4 4 4 2 9 2 4 0
Sandur 3 0 1 2 3 0 1 0 2 4 4 1 1 0 2 5 5 0
Moraine 2 0 8 1 6 0 3 4 6 2 7 0 3 0 15 3 6 0
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Argomenti della rivista:
Geoscienze, Geografia