scholarly journals SPEAR: Early results from a very high latitude ionospheric heating facility

2007 ◽  
Vol 40 (3) ◽  
pp. 384-389 ◽  
Author(s):  
T.K. Yeoman ◽  
N. Blagoveshchenskaya ◽  
V. Kornienko ◽  
T.R. Robinson ◽  
R.S. Dhillon ◽  
...  
Keyword(s):  
High Latitude ◽  
Ionospheric Heating ◽  
Heating Facility ◽  
Early Results ◽  
Very High

Magnetic conjugacy at very high latitude; shepherd bay-scott base relationship

1965 ◽  
Vol 13 (4) ◽  
pp. 303-324 ◽  
Author(s):  
E.M. Wescott ◽  
K.B. Mather
Keyword(s):  
High Latitude ◽  
Magnetic Conjugacy ◽  
Very High

Very high latitude F-region irregularities observed by HF-radar backscatter

1983 ◽  
Vol 10 (9) ◽  
pp. 904-907 ◽  
Author(s):  
K. B. Baker ◽  
R. A. Greenwald ◽  
R. T. Tsunoda
Keyword(s):  
High Latitude ◽  
Hf Radar ◽  
Radar Backscatter ◽  
F Region ◽  
Very High

scholarly journals Reduced High-Latitude Land Seasonality in Climates with Very High Carbon Dioxide

2021 ◽  
Author(s):  
Matthew Henry ◽  
Geoffrey Vallis
Keyword(s):  
Carbon Dioxide ◽  
High Latitude ◽  
High Carbon ◽  
High Carbon Dioxide ◽  
Very High

scholarly journals History of the Tromsø Ionosphere Heating facility

2021 ◽  
Author(s):  
Michael T. Rietveld ◽  
Peter Stubbe
Keyword(s):  
Historical Background ◽  
Incoherent Scatter Radar ◽  
Max Planck ◽  
Ionospheric Heating ◽  
Heating Facility ◽  
Incoherent Scatter ◽  
Scatter Radar ◽  
History Of ◽  
New Generation ◽  
Near Future

Abstract. We present the historical background to the construction of a major ionospheric heating facility near Tromsø, Norway in the 1970s by the Max Planck Institute for Aeronomy and the subsequent operational history to the present. It was built next to the EISCAT incoherent scatter radar facility and in a region with a multitude of diagnostic instruments used to study the auroral region. The facility was transferred to the EISCAT Scientific Association in January 1993 and continues to provide new discoveries in plasma physics and ionospheric and atmospheric science to this day. It is expected that ‘Heating’ will continue operating together with the new generation of incoherent scatter radar, called EISCAT_3D, when it is commissioned in the near future.

scholarly journals The Italian Arctic expedition 1899–1900: What happened to the first support party?

Polar Record ◽  
2021 ◽  
Vol 57 ◽  
Author(s):  
Björn Lantz
Keyword(s):  
Seventeenth Century ◽  
High Latitude ◽  
North Pole ◽  
Extant Literature ◽  
The North ◽  
Franz Josef Land ◽  
Very High

Abstract Beginning in the seventeenth century, numerous attempts were made to reach a very high latitude or even the North Pole. One of the more successful of these was the Italian Arctic expedition of 1899–1900, led by Luigi Amedeo di Savoia (Duke of the Abruzzi). Using two successively returning support parties, di Savoia’s second-in-command, Captain Umberto Cagni’s party eventually reached 86°34’N north of their base in the Franz Josef Land archipelago before retreating due to lack of supplies. The second support party also returned safely to the base from 83°16’N. However, the first support party, led by Lieutenant Francesco Querini, disappeared without a trace after returning southwards from 82°32’N. Although previous studies have cited starvation from lack of food supplies or accidents as the potential causes of their disappearance, the extant literature does not provide any deeper analyses to explain these events. This study explores the hypothesis that the first support party in fact turned back from a much more westerly position than they thought. This, in combination with an untimely blizzard that prevented travelling for several days, most likely made it impossible for Querini and his two men to return to base before their limited supplies ran out.

Diurnal Effects in Magnetic Conjugacy at very High Latitude

Nature ◽  
1963 ◽  
Vol 197 (4874) ◽  
pp. 1259-1261 ◽  
Author(s):  
E. M. WESCOTT ◽  
K. B. MATHER
Keyword(s):  
High Latitude ◽  
Magnetic Conjugacy ◽  
Very High

scholarly journals NUMERICAL SIMULATIONS OF ELF/VLF WAVE GENERATED BY MODULATED BEAT-WAVE IONOSPHERIC HEATING IN HIGH LATITUDE REGIONS

2016 ◽  
Vol 50 ◽  
pp. 55-63
Author(s):  
Hai-Ying Li ◽  
Jie Zhan ◽  
Zhen-Sen Wu ◽  
Pengfei Kong
Keyword(s):  
Numerical Simulations ◽  
High Latitude ◽  
Ionospheric Heating

A broad climatology of very high latitude substorms

2012 ◽  
Vol 50 (11) ◽  
pp. 1512-1523 ◽  
Author(s):  
Anand K. Singh ◽  
A.K. Sinha ◽  
Rahul Rawat ◽  
Bulusu Jayashree ◽  
B.M. Pathan ◽  
...  
Keyword(s):  
High Latitude ◽  
Very High

scholarly journals The effects of an interplanetary shock on the high-latitude ionospheric convection during an IMF <I>B<sub>y</sub></I>-dominated period

2008 ◽  
Vol 26 (9) ◽  
pp. 2937-2951 ◽  
Author(s):  
I. Coco ◽  
E. Amata ◽  
M. F. Marcucci ◽  
D. Ambrosino ◽  
J.-P. Villain ◽  
...  
Keyword(s):  
High Latitude ◽  
Geomagnetic Field ◽  
Dynamic Pressure ◽  
Interplanetary Shock ◽  
Ionospheric Convection ◽  
Vortical Structures ◽  
Magnetometer Data ◽  
Northern High Latitude ◽  
Lobe Reconnection ◽  
Very High

Abstract. On 6 January 1998 an interplanetary shock hit the magnetosphere around 14:15 UT and caused a reconfiguration of the northern high-latitude ionospheric convection. We use SuperDARN, spacecraft and ground magnetometer data to study such reconfiguration. We find that the shock front was tilted towards the morning flank of the magnetosphere, while the Interplanetary Magnetic Field (IMF) was By-dominated, with By<0, IMF Bz>0 and |By|>>Bz. As expected, the magnetospheric compression started at the first impact point of the shock on the magnetopause causing an increase of the Chapman-Ferraro current from dawn to dusk and yielding an increase of the geomagnetic field at the geostationary orbit and on the ground. Moreover, the high-latitude magnetometer data show vortical structures clearly related to the interaction of the shock with the magnetosphere-ionosphere system. In this context, the SuperDARN convection maps show that at very high latitudes above the northern Cusp and in the morning sector, intense sunward convection fluxes appear, well correlated in time with the SI arrival, having a signature typical for Bz>0 dominated lobe reconnection. We suggest that in this case the dynamic pressure increase associated to the shock plays a role in favouring the setting up of a new lobe merging line albeit |By|>>Bz≥0.

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