Jökull - 01.12.1974, Blaðsíða 40

occurs. Such cavities have been proven to exist
in the Alps (Vivian et al., 1973).
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Á G R I P
GRÍMS VA TNAHLA UPIÐ 1972,
ORSAKIR, HEGÐUN OG AURBURÐUR
Haukur Tómasson,
Orkustofnun, Reykjavík
I greininni er rætt um rúmmál Grímsvatna-
hlaupa og kornist að þeirri niðurstöðu, að sú
tala sem venjulega er notuð um hlauprúmmál-
ið sé of há. 1 reikningum í þessari grein er
rúmmál Grímsvatnahlaupa talið 2 km3 og sú
stærð notuð til útreikninga á aurburði. Ovissa
í rennslismælingum er rædd og ástæður þeirra.