Comprehensive analysis of the efficiency of the system of dynamic block access to data of ultra-large distributed remote sensing archives

The article is devoted to the analysis of the efficiency of the system of dynamic block access to data of ultra-large distributed ERS archives, implemented according to the technology developed at the Space Research Institute. The system under consideration is intended to prepare the required set of data blocks with given characteristics for their processing on a server cluster. Based on the analysis of the most significant factors affecting the performance of this system, a methodology was developed that makes it possible to estimate the preparation time of the required data set using the existing hardware infrastructure.

Synoptic view on sub-ionospheric VLF/LF amplitude and phase variations at the Graz seismo-electromagnetic facility

<p>This presentation discusses physical processes related to potentially seismic and non-seismic disturbances along VLF/LF paths measured with two different receivers located side by side at the Space Research Institute (IWF) facility in Graz, Austria. At the same time both systems are embedded in international networks which gives the unique opportunity to probe the waveguide cavity over a large area.<br>In general, a variety of VLF/LF amplitude and phase variations are ubiquitous at wide scales throughout the cavity. We analyse such signals observed in the period 2018-2020 (solar minimum, i.e. less external forcing of the upper ionospheric boundary) in the time- and frequency-domain for several paths. In this attempt we aim to single out natural disturbances, characterise the source event, and figure out the lithosphere-atmosphere-ionosphere coupling mechanism. For known seismic events we consider the so-called Dobrovolsky-Bowman relationship [1,2] allowing to estimate the pre-seismic zone crossed by the VLF/LF paths.<br>The findings open up good prospects for an automated monitoring and characterisation of source phenomena who affect the electric field of VLF/LF sub-ionospheric links.</p><p>Ref:<br>[1] Dobrovolsky, I.P., Zubkov, S.I., and Miachkin, V.I., Estimation of the size of earthquake preparation zones, PAGEOPH 117, 1025–1044, 1979.<br>https://doi.org/10.1007/BF00876083<br>[2] Bowman, D.D., Ouillon, G., Sammis, C.G., Sornette, A., and Sornette, D., An observational test of the critical earthquake concept, JGR Solid<br>Earth, 103, B10, 24359-24372, 1998. https://doi.org/10.1029/98JB00792</p>

Planetary and Earth science in Russian space programs

<p>We review current status of Russian space research in the fields of planetary and Earth science. In the recent years planetary experiments of Space Research Institute are flown onboard six European and US missions at Mars, Venus, Moon and Mercury. In addition, two instruments are onboard Exomars-2016, a joint project with ESA. The second Exomars launch is expected in 2020. Extensive Russian lunar program includes launches of two landers and one orbiter in 2021,2024,2025, also with ESA cooperation. In more distant future the new Venus program is shaping up. Besides that Space Research Institute conducts extensive Earth observation research, mostly targeted at natural systems monitoring. </p>

Solidification Furnace Developed for Sounding Rockets: Rio Verde Mission

Brazil has a Microgravity Program mainly based on experiments using sounding rockets. Up to now, four missions have been carried out with approximately 35 experiments submitted in total. In all flights, the Associate Laboratory of Sensors and Materials of the Brazilian Space Research Institute (LABAS/INPE) participated with a fast solidification furnace, capable of producing temperatures up to 900 °C, which was tested with semiconductor and metal alloys. This paper describes the construction and the performance of that furnace during the last parabolic flight, Rio Verde Mission, occurred in 2016. The solidification furnace is now qualified and ready to be used by other institutions in sounding rocket flights.

Analytical review of European projects LUCAS and CORINE for monitoring and validation of land cover and landuse on the basis of satellite and ground observations and experience of land cover mapping in Ukraine

Analytical review of the European project CORINE (Coordination of Information on the Environment) Land Cover (CLC) and LUCAS (Land Use/Cover Area Frame Statistical Survey) and their use for the monitoring and validation of land cover and land use is fulfilled. The experience of land cover mapping in Ukraine on the basis of developed in the Space Research Institute of NAS of Ukraine and SSA of Ukraine neural network classification methods, heterogeneous satellite data fusion methods and implementation of appropriate automated information technologies within the SIGMA and Sen2Agri European projects are considered.

The Influence of High Gravity in PbSn Eutectic Alloy

The study of materials processed in centrifuges improves the understanding of the acceleration influence in the convection behavior in materials processing. This work aims to study the influence of high gravity in PbSn eutectic alloy solidification using a small centrifuge designed and built in the Associate Laboratory of Sensors and Materials of the Brazilian Space Research Institute (LAS/INPE). The samples were analyzed by densitometry and scanning electron microscopy (SEM).