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Leaf fossils show severe end-Cretaceous plant extinction in Patagonia（图）
Leaf fossils severe end-Cretaceous plant extinction Patagonia
2021/1/18
The asteroid impact 66 million years ago that ushered in a mass extinction and ended the dinosaurs also killed off many of the plants they relied on for food. Fossil leaf assemblages from Patagonia su...
OPTICAL FLOW APPLIED TO TIME-LAPSE IMAGE SERIES TO ESTIMATE GLACIER MOTION IN THE SOUTHERN PATAGONIA ICE FIELD
optical flow time-lapse imagery motion detection glacier
2016/11/30
In this work, we assessed the feasibility of using optical flow to obtain the motion estimation of a glacier. In general, former investigations used to detect glacier changes involve solutions that re...
Tree health influences diameter growth along site quality, crown class and age gradients in Nothofagus forests of southern Patagonia
Nothofagus pumilio annual diameter increment
2015/4/24
We examined the influence of tree health on annual diameter increment of trees along gradients in stand site quality, crown classes and tree age in Nothofagus pumilio forests of Southern Patagonia. He...
Evolution history of the crust underlying Cerro Pampa, Argentine Patagonia: Constraint from LA-ICPMS U–Pb ages for exotic zircons in the Mid-Miocene adakite
eochronological fingerprint zircon adakite LA-ICPMS crustal evolution Cerro Pampa Pa
2017/4/11
This paper newly reports results of LA-ICPMS U–Pb dating for 282 zircon crystals separated from a Middle Miocene
adakite in Cerro Pampa, southern Argentine Patagonia. With the exception of one spot a...
Holocene glaciations of Hielo Patagónico (Patagonia Icefield), South America: A brief review
Patagonia Icefield Holocene glaciations
2017/4/11
The Hielo Patagónico (Patagonia Icefield), South America, is the largest temperate ice body in the Southern Hemisphere
with more than 70 major outlet glaciers and a total area of ca. 17,200 km2
. Fo...
MONITORING GLACIER VARIATIONS IN THE SOUTHERN PATAGONIA ICEFIELD UTILIZING IMAGES LANDSAT 7 ETM+
Cryosphere Glaciology Glacier Variation Landsat 7 Database
2014/4/30
The monitoring of the variation in glacier areas is increasingly important with the apparent trend of global warming. One of the major ice sheets on the planet, the main glaciers of Southern Patagonia...
Phytoplankton distribution and photosynthesis dynamics in the Chubut River estuary (Patagonia, Argentina) throughout tidal cycles
Phytoplankton distribution photosynthesis dynamics the Chubut River estuary throughout tidal cycles
2014/4/16
The aim of this study was to determine the effects of the tidal dynamics and physical forcing on phytoplankton distribution and photosynthesis dynamics in the Chubut River estuary, Argentina. Physical...
Sediment records of highly variable mercury inputs to mountain lakes in Patagonia during the past millennium
Sediment records highly variable mercury mountain lakes Patagonia the past millennium
2010/8/12
High Hg levels in the pristine lacustrine ecosystems of the Nahuel Huapi National Park, a protected zone situated in the Andes of Northern Patagonia, Argentina, have initiated further investigations o...
《The Voyage of the Beagle》Chapter 9 Santa Cruz, Patagonia, and the Falkland Islands
The Voyage of the Beagle 随Beagle号航行考察 查尔斯·达尔文 Charles Darwin
2008/12/23
APRIL 13, 1834. -- The Beagle anchored within the mouth of the Santa Cruz. This river is situated about sixty miles south of Port St. Julian. During the last voyage Captain Stokes proceeded thirty mil...
Validating numerical simulations of snow avalanches using dendrochronology: the Cerro Ventana event in Northern Patagonia, Argentina
Validating numerical simulations of snow avalanches dendrochronology the Cerro Ventana event
2009/12/30
The damage caused by snow avalanches to property and human lives is underestimated in many regions around the world, especially where this natural hazard remains poorly documented. One such region is ...
Fibrous-clay mineral formation and soil evolution in Aridisols of northeastern Patagonia, Argentina
Palygorskite Sepiolite Fluorite Soil genesis Calcic and petrocalcic horizons Chubut province of Argentina
2011/11/11
Recent studies of soil–landscape relationships in northeastern Patagonia identified fibrous-clay minerals in calcic and petrocalcic horizons
developed on old fluvio-glacial plains called “Rodados Pat...