タグ

北極圏

14 件の記事

Silene acaulis, moss campion

クッション植物の生態と生存戦略極限環境に適応した驚異の形態

クッション植物高山植物平行進化生態系エンジニア
Temperature variations during the Holocene from a collection of different reconstructions and their average. The most recent period is on the right, but the recent warming is seen only in the inset.

ホロセーン気候最適期地球が経験した温暖な黄金時代

ホロセーン気候最適期完新世地球温暖化古気候学
The Adirondack Mountains of Upstate New York form the southernmost part of the Eastern forest-boreal transition ecoregion, constituting part of the world's taiga biome.

タイガ北半球に広がる亜寒帯針葉樹林の生態系と現状

タイガ亜寒帯針葉樹林バイオーム北極圏
Ibyuk pingo near Tuktoyaktuk, northern Canada

ピンゴ(氷丘)の形成メカニズムと世界的な分布

ピンゴ氷丘永久凍土周氷河地形
The Arctic Ocean, with borders as delineated by the International Hydrographic Organization (IHO), including Hudson Bay (some of which is south of 57°N latitude, off the map) and all other marginal seas.

北極海地球最北の極限環境とその地理的特性

北極海北極圏海洋地理海氷
Permafrost temperature profile. Permafrost occupies the middle zone, with the active layer above it, while geothermal activity keeps the lowest layer above freezing. The vertical 0 °C or 32 °F line denotes the average annual temperature that is crucial for the upper and lower limit of the permafrost zone, while the red lines represent seasonal temperature changes and seasonal temperature extremes. Solid curved lines at the top show seasonal maximum and minimum temperatures in the active layer, while the red dotted-to-solid line depicts the average temperature profile with depth of soil in a permafrost region.

永久凍土の正体と地球環境への影響気候変動がもたらすリスクと科学的視点

永久凍土気候変動メタン放出能動層
The Northern Hemisphere from above the North Pole

北半球の地理と気候地球の北半分が持つ特徴とメカニズム

北半球赤道コリオリの力北極圏
Civil polar twilight in Ruka, Finland at noon in December

極夜(ポーラーナイト)のメカニズムと人間への影響

極夜ポーラーナイト白夜北極圏
A snowy landscape of Inari located in Lapland (Finland)

北極圏の地理と生態系極限環境がもたらす自然と文化

北極圏北極海ツンドラ永久凍土
Midnight sun at the North Cape on the island of Magerøya in Norway

白夜(ミッドナイトサン)の仕組みと世界各地の現象

白夜ミッドナイトサン北極圏南極圏
Norsemen landing in Iceland – a 19th-century depiction by Oscar Wergeland

アイスランド火と氷が織りなす北欧の島国

アイスランド北欧レイキャビク火山
MODIS satellite photo of Svalbard, courtesy NASA

スヴァールバル諸島北極圏の自然と地理を紐解く

スヴァールバル諸島北極圏ノルウェースピッツベルゲン島