Yearsago,ImovedtoatinytowninAlaska.Ididn’tknowwhatcareerIwanted.Ididn’tknowthatIwouldbecomeascientistandanexplorer.Buttoday,Iamaglaciologist. Istudy glaciersaroundthe world!
WhenIwasyoung,Ihadnever metascientist.Andafemalescientist?Never.ButmydadalwaystoldmetofocusonwhatIloved.Then,acareerwould follow.
Ilovedtheoutdoors.So,ImovedtoSkagway,Alaska,toworkoutside.There,Ifellinlovewithglaciers.Aglacierisamovingriverofice.ItflowsoverEarth’ssurface.Skagway’svalley,orfjord, wasmadeby one.
![](/nationalgeographic/trailblazer_november_december_2019/glacier_formation_and_how_a_glacier_forms/514389/snub_nosed_monkey.640_0_1.jpg)
Skagway,Alaska,isinavalleymadebyaglacierlong ago.
GlacierFormation
Foralongtime,Skagwayhadthreethingsneededtogrowglaciers.Ithadsnow,coldtemperatures,andtime.Snow fallsandstacksup.Coldtemperatureskeepthesnowfrommelting.Overtime,thesnowstacksupuntilitishundredsofmetersthick.Thenitturnsintoglacier ice.
How?Imagineasinglesnowflake.Itdoesn’tweighverymuch.Nowimaginemillionsandmillionsofsnowflakesstackedontopofeachother.Whathappenstotheoneatthebottom?Theweightoftheothersnowsquishesdown.Overtime,thesnowcompressesintoglacier ice!
![](/nationalgeographic/trailblazer_november_december_2019/glacier_formation_and_how_a_glacier_forms/980166/cloudinary_glacier_20forms_20long_20_20draft_205.960_0_1.jpg)