搜索结果: 31-45 共查到“理学 Antarctica”相关记录108条 . 查询时间(0.157 秒)
Could we find any signal of the stratosphere-ionosphere coupling in Antarctica?
ionosphere-stratosphere interaction temperature profiles
2015/9/25
An investigation searching for a possible coupling between the lower ionosphere and the middle atmosphere in Antarctica is here performed on the basis of stratospheric vertical temperature profiles an...
Radio Echo Sounding (RES) investigations at Talos Dome (East Antarctica): bedrock topography and ice thickness
radio echo sounding radio glaciology ice thickness measurements
2015/9/17
Radio echo sounding measurements were collected during two Antarctic expeditions to determine the ice thickness
and the sub-glacial morphology of Talos Dome in the region around 72°48'S; 159°06'E (ab...
Radon and thoron daughter activities in the environment of the King George Island (West Antarctica)
Antarctica radon uranium thorium spectrometry
2015/9/10
Results of 253 gamma spectrometric analyses of radon daughters in soil and bedrocks of the King George Island
(West Antarctica) are presented. Measured values range from 0.1 to 58.4 Bq/kg, and from 4...
Location of a new ice core site at Talos Dome (East Antarctica)
radio echo sounding radio glaciology ice thickness measurements internal layering
2015/9/8
In the frame of glaciology and palaeoclimate research, Talos Dome (72°48lS; 159°06lE), an ice dome on the East Antarctic plateau, represents the new selected site for a new deep ice core drilling. The...
Fourteen years of geomagnetic daily variation at Mario Zucchelli Station (Antarctica)
Geomagnetic daily variation polar areas
2015/9/2
During the 1986-87 austral summer a geomagnetic observatory was installed at the Italian Antarctic Base Mario Zucchelli Station. In the first three years continuous time variation monitoring and abso...
Modal decomposition of magnetic maps: the case of Cape Roberts aeromagnetic survey, Antarctica
Magnetic mapping Digital Enhancement Eigenvalues HRAM Antarctic Magnetic Surveys
2015/8/28
This paper proposes a digital enhancement tool for magnetic anomaly maps. The magnetic anomaly map is decomposed by means of Eigenvalue Decomposition into a number of orthogonal bases. The dataset is ...
Less than a week after returning to my home in Halifax from Y2K celebrations in Banff, I boarded an airplane to join the JOIDES Resolution in Fremantle, Australia, with the ultimate destination of Pry...
Multiplatform, Multidisciplinary Investigations of the Impacts of Modified Circumpolar Deep Water in the Ross Sea, Antarctica
Multiplatform Multidisciplinary Investigations
2015/7/17
In 2010–2011, three projects combined to characterize the temporal and spatial distributions of Modified Circumpolar Deep Water (MCDW) in the Ross Sea using icebreaker-based sampling, gliders, instrum...
glacial intensification during the Neogene a review of Seismic Stratigraphic evidence from the ross Sea, antarctica, continental Shelf
Seismic Stratigraphic evidence antarctica
2015/7/15
Seismic stratigraphic and drill data from Antarctic continental
margins have provided much direct evidence concerning ice sheet evolution as
Earth’s climate cooled from the warmth of the Eocene. S...
UNL drillers help make new discoveries in Antarctica
UNL drillers new discoveries Antarctica
2015/3/4
Using a hot-water drill and an underwater robotic vehicle designed, built and operated by a University of Nebraska-Lincoln engineering team, scientists have made new discoveries about Antarctica's geo...
Double dating detrital zircons in till from the Ross Embayment, Antarctica
geochronology thermochronology Ross Embayment, Antarctica Antarctica
2015/1/16
U/Pb and (U-Th)/He (ZHe) dating of detrital zircons from glacial till samples in the Ross Embayment, Antarctica records cooling after the Ross/Pan-African orogeny (450-625 Ma) followed by a mid-Jurass...
RECONSTRUCTING PAST ANTARCTIC ICE FLOW PATHS IN THE ROSS EMBAYMENT, ANTARCTICA USING SAND PETROGRAPHY, PARTICLE SIZE AND DETRITAL ZIRCON PROVENANCE
Provenance Antarctica zircons Till
2015/1/16
Tills for this study were analyzed from sites in East Antarctica (EA), West Antarctica (WA) and along a transect in the Ross Sea. Particle size, sand petrography, and detrital zircons were used to pro...
ROCK, TILL, AND ICE: A PROVENANCE STUDY OF THE BYRD GLACIER AND THE CENTRAL AND WESTERN ROSS SEA, ANTARCTICA
Glacial Geology Byrd Glacier Ross Sea Provenance
2015/1/16
Petrography of the sand fraction, particle size analysis, and detrital zircon U/Pb isotope data, and pebble count data were collected from Byrd Glacier moraines and central/western Ross Sea till in or...
Active-layer thermal monitoring on the Fildes Peninsula, King George Island, maritime Antarctica
Climate change phenomenon permafrost active layer radiation layer temperature data monitoring in southern hemisphere circumpolar active layer
2015/1/6
International attention to climate change phenomena has grown in the last decade; the active layer and permafrost are of great importance in understanding processes and future trends due to their role...
Thermal characterization of the active layer at the Limnopolar Lake CALM-S site on Byers Peninsula (Livingston Island), Antarctica
Lake site the circumpolar active layer active layer thickness monitoring system air surface snow the ground temperature
2015/1/6
The Limnopolar Lake site (A25), of the Circumpolar Active Layer Monitoring-South network (CALM-S), is located on Byers Peninsula, where the active layer thickness is monitored systematically (by mecha...