Modelling twentieth century global ocean circulation and iceberg flux at 48°N: implications for west Greenland iceberg discharge
نویسندگان
چکیده
منابع مشابه
Links between ocean temperature and iceberg discharge during Heinrich events
Palaeoclimate records have revealed the presence of millennial-scale climate oscillations throughout the last glacial period1. Six periods of extreme cooling in the Northern Hemisphere—known as Heinrich events—were marked by an enhanced discharge of icebergs into the North Atlantic Ocean2,3, increasing the deposition of ice-rafted debris2. Increased sliding at the base of ice sheets as a result...
متن کاملA century of variation in the dependence of Greenland iceberg calving on ice sheet surface mass balance and regional climate change
Iceberg calving is a major component of the total mass balance of the Greenland ice sheet (GrIS). A century-long record of Greenland icebergs comes from the International Ice Patrol's record of icebergs (I48N) passing latitude 48° N, off Newfoundland. I48N exhibits strong interannual variability, with a significant increase in amplitude over recent decades. In this study, we show, through a com...
متن کاملICESat profiles of tabular iceberg margins and iceberg breakup at low latitudes
[1] ICESat elevation profiles of tabular iceberg margins and the Ronne Ice Shelf edge reveal shapes indicative of two types of bending forces. Icebergs and shelf fronts in sea-ice-covered areas have broad ( 1000 m wide), rounded, 0.6 m high ‘berms’ and outer edges that slope down several meters toward the water. Bergs in warmer water have 2 to 5m ‘ramparts’ with 1500 m wide edge-parallel ‘moats...
متن کاملIceberg discharge to the Chukchi shelf during the Younger Dryas
a r t i c l e i n f o The extent of glaciation in northwestern Alaska, the source of sediment supply to the Chukchi shelf and slope, and the movement of sea ice and icebergs across the shelf during the last glacial maximum (LGM) remain poorly constrained. Here we present geophysical and geological data from the outer Chukchi margin that reveal a regionally extensive, heavily ice-scoured surface...
متن کاملIceberg Query Lattices for Datalog
In this paper we study two orthogonal extensions of the classical data mining problem of mining association rules, and show how they naturally interact. The first is the extension from a propositional representation to datalog, and the second is the condensed representation of frequent itemsets by means of Formal Concept Analysis (FCA). We combine the notion of frequent datalog queries with ice...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Progress in Oceanography
سال: 2015
ISSN: 0079-6611
DOI: 10.1016/j.pocean.2015.07.003