ðɪs pɹˈɑːsɛs, ɹᵻpˈiːɾᵻd θɹuː ðə lˈɔŋ ˈɑːɹktɪk wˈɪntɚ, kæn dʒˈɛnɚɹˌeɪt lˈɑːɹdʒ vˈɑːljuːmz ʌv ˈaɪs, wɪð sˌʌm ˈɔːfeɪz ɪn ˈɑːɹktɪk ɐlˈæskə—wˌɛɹ ðeɪ ɑːɹ ˈɔːlsoʊ nˈoʊn æz “ˈaɪsɪŋz”—ɐtˈeɪnɪŋ ˈɛɹiəz ʌv twˈɛnti plˈʌs kˌeɪˈɛm tˈuː ænd lˈoʊkəlˌaɪzd θˈɪknəsᵻz ʌv sˈɪks plˈʌs ˈɛm. ðə kjˈuːmjʊlətˌɪv ˈɛɹiə ʌv lˈeɪtwˈɪntɚɹ ˈɔːfeɪz ɪnðə sˈæɡɐvˌænɚktˌɑːk ɹˈɪvɚ dɹˈeɪnɪdʒ ɐlˈoʊn, fɔːɹ ɛɡzˈæmpəl, ɹˈeɪndʒᵻz fɹʌm wˈʌnhˈʌndɹɪd tˈuː tə wˈʌnhˈʌndɹɪd θɹˈiː kˌeɪˈɛm tˈuː.
This process, repeated through the long arctic winter, can generate large volumes of ice, with some aufeis in arctic Alaska—where they are also known as “icings”—attaining areas of 20+ km2 and localized thicknesses of 6+ m. The cumulative area of late-winter aufeis in the Sagavanirktok River drainage alone, for example, ranges from 102 to 103 km2.