Jökull


Jökull - 01.12.2007, Side 28

Jökull - 01.12.2007, Side 28
Maciej Dąbski Figure 4. Lichen dating curve (Bradwell 2004) and dates of Fláajökull moraine ridges. – Reiknaður vöxtur fléttna á jökulgörðum útfrá stærð þeirra. Table 2. Dates of Fláajökull moraine rides formation obtained with use of different lichenometric methods. – Reiknaður aldur jökulgarða I–V við Fláajökul útfrá stærð fléttna við jökuljaðarinn. moraine I II III IV V single largest lichen (mm) 150 74 150 66 40 single largest lichen* (mm) 83 74 80 66 40 “1-in-1000” lichen** (mm) 80 72 59 54 46 5 largest* lichens (mm) 83,80,73,70,69 74,73,63,63,62 80,70,60,59,53 66,64,62,58,51 40,40,40,39,39 average of 5 largest* (mm) 75 67 64,4 60,2 39,6 frequency gradient (-1)** 0.0505 0.0554 0.0748 0.0871 0.095 A (years AD) 1905 1915 1918 1923 1949 B (years AD) 1791 1832 1806 1862 1927 C (years AD) 1804 1841 1884 1898 1915 D (years AD) 1898 1906 1930 1939 1944 E (years AD) 1870/94 1907 1920/25 1932/33 1934/35 * without single exceptionally large lichen (150 mm) ** without largest lichens (reduction described in this paper) A-years: calculated with the method used by Evans et al., average of 5 largest thalli. B-years: calculated with use of the Bradwell’s (2001) dating curve (single largest thallus). C-years: calculated with use of the Bradwell’s (2001) dating curve and use of predicted “1-in-1000” thallus (Lock et al. 1979). D-years: calculated with use of the frequency gradient approach (Bradwell 2004) with correction described in this paper. E-years: obtained in the previous research (Dąbski 2002) 26 JÖKULL No. 57
Side 1
Side 2
Side 3
Side 4
Side 5
Side 6
Side 7
Side 8
Side 9
Side 10
Side 11
Side 12
Side 13
Side 14
Side 15
Side 16
Side 17
Side 18
Side 19
Side 20
Side 21
Side 22
Side 23
Side 24
Side 25
Side 26
Side 27
Side 28
Side 29
Side 30
Side 31
Side 32
Side 33
Side 34
Side 35
Side 36
Side 37
Side 38
Side 39
Side 40
Side 41
Side 42
Side 43
Side 44
Side 45
Side 46
Side 47
Side 48
Side 49
Side 50
Side 51
Side 52
Side 53
Side 54
Side 55
Side 56
Side 57
Side 58
Side 59
Side 60
Side 61
Side 62
Side 63
Side 64
Side 65
Side 66
Side 67
Side 68
Side 69
Side 70
Side 71
Side 72
Side 73
Side 74
Side 75
Side 76
Side 77
Side 78
Side 79
Side 80
Side 81
Side 82
Side 83
Side 84
Side 85
Side 86
Side 87
Side 88
Side 89
Side 90
Side 91
Side 92
Side 93
Side 94
Side 95
Side 96
Side 97
Side 98
Side 99
Side 100
Side 101
Side 102
Side 103
Side 104
Side 105
Side 106
Side 107
Side 108
Side 109
Side 110
Side 111
Side 112
Side 113
Side 114
Side 115
Side 116
Side 117
Side 118
Side 119
Side 120
Side 121
Side 122
Side 123
Side 124

x

Jökull

Direkte link

Hvis du vil linke til denne avis/magasin, skal du bruge disse links:

Link til denne avis/magasin: Jökull
https://timarit.is/publication/1155

Link til dette eksemplar:

Link til denne side:

Link til denne artikel:

Venligst ikke link direkte til billeder eller PDfs på Timarit.is, da sådanne webadresser kan ændres uden advarsel. Brug venligst de angivne webadresser for at linke til sitet.