Results 21 to 30 of about 43,023 (70)

Asymmetry of Submesoscale Instabilities in Anticyclonic and Cyclonic Eddies

Geophysical Research Letters
The upper‐ocean relative vorticity has been found to be cyclonically skewed, but altimetry observations indicate that long‐lifespan mesoscale eddies tend to be anticyclonic.
Weian Shi, Hongyang Lin, Qiang Deng, Jianyu Hu   +3 more
doaj   +1 more source

Empirically Estimated Electron Lifetimes in the Earth's Radiation Belts: Van Allen Probe Observations

Geophysical Research Letters, 2020
We use measurements from NASA's Van Allen Probes to calculate the decay time constants for electrons over a wide range of energies (30 keV to 4 MeV) and L values ( L = 1.3–6.0) in the Earth's radiation belts.
S. G. Claudepierre, Q. Ma, J. Bortnik, T. P. O'Brien, J. F. Fennell, J. B. Blake   +5 more
doaj   +1 more source

Mantle Plume‐Lithosphere Interactions Beneath the Emeishan Large Igneous Province

Geophysical Research Letters
The formation of large igneous provinces (LIPs) has been widely believed to be linked to mantle plume activity. However, how the plume modifies the overlying lithosphere, particularly its compositional structure, remains uncertain.
Anqi Zhang, Zhen Guo, Juan Carlos Afonso, J. Gregory Shellnutt, Yingjie Yang   +4 more
doaj   +1 more source

Lipid Biomarkers Quantify Holocene Summer Temperature and Ice Cap Sensitivity in Icelandic Lakes

Geophysical Research Letters, 2020
Although recent research has made significant advances in characterizing Iceland's Holocene environmental history, the region still lacks reliable and continuous records of corresponding paleotemperature.
David J. Harning, Lorelei Curtin, Áslaug Geirsdóttir, William J. D'Andrea, Gifford H. Miller, Julio Sepúlveda   +5 more
doaj   +1 more source

Subduction Initiation at the Corner of Small Oceanic Basins

Geophysical Research Letters
In Southeast Asia, emerging subduction zones often appear to begin at the corners of small oceanic basins, which have a triangular‐indenter continent–ocean boundary geometry.
Miao Dong, Tianyao Hao, Yue Li, Jian Zhang, Gui Fang   +4 more
doaj   +1 more source

Two Decades of Ocean Acidification in the Surface Waters of the Beaufort Gyre, Arctic Ocean: Effects of Sea Ice Melt and Retreat From 1997–2016

Geophysical Research Letters, 2020
Anthropogenic CO2 uptake drives ocean acidification and so decreases the calcium carbonate (CaCO3) saturation state (Ω). Undersaturation of surface water with respect to aragonite‐type CaCO3 was first reported for 2008 in the Canada Basin, preceding ...
Y. Zhang, M. Yamamoto‐Kawai, W.J. Williams   +2 more
doaj   +1 more source

The Response of Surface Temperature Persistence to Arctic Sea‐Ice Loss

Geophysical Research Letters
We investigate the response of surface temperature persistence, quantified using a lagged autocorrelation, to imposed Arctic sea‐ice loss in coupled model experiments.
Neil T. Lewis, William J. M. Seviour, Hannah E. Roberts‐Straw, James A. Screen   +3 more
doaj   +1 more source

Inter‐episodic Tremor and Slip Event Episodes of Quasi‐spatiotemporally Discrete Tremor and Very Low Frequency Earthquakes in Cascadia Suggestive of a Connective Underlying, Heterogeneous Process

Geophysical Research Letters, 2020
Exploring relationships between different types of slow earthquakes is essential for determining their source properties and controlling parameters. Studies show that very low frequency earthquakes (VLFEs) and tremor are discrete events that necessitate ...
Alexandra A. Hutchison
doaj   +1 more source

Accelerating Subglacial Hydrology for Ice Sheet Models With Deep Learning Methods

Geophysical Research Letters
Subglacial drainage networks regulate the response of ice sheet flow to surface meltwater input to the subglacial environment. Simulating subglacial hydrology evolution is critical to projecting ice sheet sensitivity to climate, and contribution to sea ...
Vincent Verjans, Alexander Robel
doaj   +1 more source

A Long‐Term View of Episodic Tremor and Slip in Cascadia

Geophysical Research Letters, 2020
Episodic Tremor and Slip, or ETS, is a well‐recognized phenomenon in the Cascadia subduction zone. Constraining the precise location of geodetically measured slip during ETS is important for clarifying the relationship between slip and tremor during ETS,
Noel M. Bartlow
doaj   +1 more source