搜索结果: 1-15 共查到“地球物理学 Antarctica”相关记录26条 . 查询时间(0.017 秒)
When the temperature drops below freezing, snow and ice often follow. But that's not always the case in Antarctica, where for the first time, drizzle has been recorded at temperatures well below freez...
Latest improvements for the echo sounding system of the Italian radar glaciological group and measurements in Antarctica
radioglaciology ground penetrating radar ice thickness measurements
2015/10/8
Radio echo sounding is an active remote-sensing method using electromagnetic wave penetration in a particular medium such as ice and permits the measurements of its thickness, the level of the bedrock...
Development of a new generation gravity map of Antarctica: ADGRAV Antarctic Digital Gravity Synthesis
Gravity Antartica
2015/10/8
The U.S. National Science Foundation (NSF) has agreed to support the development of a new generation gravity map of Antarctica (ADGRAV - Antarctic Digital Gravity Synthesis), funding the development o...
Development of an improved geomagnetic reference field of Antarctica
Geomagnetic reference field spherical cap harmonics polar regions
2015/10/8
The properties of the Earth's core magnetic field and its secular variation are poorly known for the Antarctic. The increasing availability of magnetic observations from airborne and satellite surveys...
Compilation of shipborne magnetic and gravity data images crustal structure of Prydz Bay (East Antarctica)
Prydz Bay shipborne data magnetic anomalies gravity anomalies two-dimensional modelling
2015/10/8
A magnetic anomaly map and a free air anomaly map of Prydz Bay, of the adjacent slope and over the continental rise area (63°S-69.5°S, 69°E-81°E) were compiled using Russian, Australian, Japanese and ...
Observations of volcanic earthquakes and tremor at Deception Island - Antarctica
volcanic earthquakes tremor antartica
2015/10/8
Deception Island - South Shetlands, Antarctica is site of active volcanism. Since 1988 field surveys have been carried out with the aim of seismic monitoring, and in 1994 a seismic array was set up ne...
Magnetic anomaly patterns over crustal blocks of the King Edward VII Peninsula, Marie Byrd Land, West Antarctica
Edward VII Peninsula Aeromagnetic anomalies tectonic block west antarctic rift system Marie Byrd Land antartica
2015/9/28
Within the framework of the GITARA II project an aeromagnetic survey was performed during the GANOVEXVII expedition (1992/1993) over the King Edward VII Peninsula in northwestern Marie Byrd Land (West...
Assessment of deep electrical conductivity features of Northern Victoria Land (Antarctica) under other geophysical constraints
Magnetovariations electrical conductivity lithosphere
2015/9/28
The lithospheric and crustal structure of the Victoria Land continental block (Antarctica) has been studied by geological and geophysical surveys. Among them magnetovariational investigations (MV) hav...
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...
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 ...
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...
Factors controlling the geochemical composition of Limnopolar Lake sediments (Byers Peninsula, Livingston Island, South Shetland Island, Antarctica) during the last ca. 1600 years
Lake sediments Limnopolar high resolution element analysis mineral composition energy dispersive x ray spectrometer glass mineral particles
2015/1/6
We sampled a short (57 cm) sediment core in Limnopolar Lake (Byers Peninsula, Livingston Island, South Shetland Islands), which spans the last ca. 1600 years. The core was sectioned at high resolution...