Issue 10 Volume 41 May 16, 2003

star. Proplyds are, thus, sources of bright line emission. The name proplyd is derived from the likelihood that the circumstellar
material harbors a protoplanetary disk.
Derived from text
H Ii Regions; Hot Stars; Nebulae; Protoplanetary Disks
20030032335 Instituto Nacional de Pesquisas Espacias, Sao Jose dos Campos, Brazil
Ozone and UV-B Radiation Observations at the Andes Mountains
Guarnieri, Fernando Luis; 2003; 118 pp.; In Portuguese; Original contains color illustrations
Report No.(s): INPE-9552-TDI/828; Copyright; Avail: CASI; A06, Hardcopy
The region of La Paz, Bolivia (68,03 W, 16,52 S) located at an altitude of 3420m, has favorable features to study the
altitude effects on total ozone and UV-B radiation. Ozone data from a Brewer Spectrophotometer, from the TOMS
Spectrometer and ozone soundings at three locations (La Paz, Cuiaba and Natal) were used to compare the ozone layer at the
Bolivian Andes region with results from Cuiab and Natal, in Brazil. The average vertical ozone profile for La Paz and Cuiaba
were determined and compared with the Natal ozone profile. The results from this analysis show the altitude effect on the
ozone column observed by TOMS and confirmed by ozone soundings at La Paz, where a mean reduction of 7,7UD is
observed, comparing with Cuiaba. Analysis of direct ultraviolet radiation shows high values of the La Paz Natal ratio, with
2,37 for 306nm and 1,94 for 320nm, showing that La Paz presents values of direct UV radiation higher than Natal. A
significant part of this increase in UV-B radiation at La Paz results from Rayleigh scattering decrease, due to a thinner
atmosphere.
Author
Andes Mountains (South America); Ozone; Ultraviolet Radiation; Observation; Spectrophotometers
20030032383 Army Cold Regions Research and Engineering Lab., Hanover, NH
Mechanical System Simulations for Seismic Signature Modeling
Lacombe, J.; Moran, M.; Harjes, D.; Oct. 2001; ISBN0309084997; 11 pp.; In English; Original contains color illustrations
Report No.(s): AD-A410109; No Copyright; Avail: CASI; A03, Hardcopy
In this paper we present seismic signature simulations using ground vibration inputs from high-fidelity 3-D mechanical
system models. Results for an M1A1 and T72 are discussed. By analyzing the simulated seismic signature data in conjunction
with the spectral features associated with the vibrations of specific vehicle sprung and un-sprung components we are able to
make unambiguous associations of seismic signal features with suspension elements, offering valuable insight into target
classification. The development of a utility (‘Tankmod’) to streamline creation of DADS tracked vehicle dynamic models for
generating seismic signals was reported in 2000. A model of an M1A1 tank created using Tankmod was described. During the
past year, two new models were created: a T72 tank and a BMP-2 armored personnel carrier. In addition, an improved vehicle
speed/steer controller was developed. The new controller maintains realistic vehicle behavior by properly limiting drive
sprocket torques and sprocket rotation for skid steering. Model inputs used in seismic signature modeling are in the form of
time series of ground reaction force and absolute position for each track block.
DTIC
Dynamic Models; Tracked Vehicles; Acoustic Simulation; Spectral Signatures
20030032410 NASA Goddard Space Flight Center, Greenbelt, MD, USA
The Magnetospheric Constellation Mission (MC-DRACO)
Moore, Thomas E.; [2003]; 17 pp.; In English; Original contains color illustrations; No Copyright; Avail: CASI; A03,
Hardcopy
The Magnetospheric Constellation Mission Dynamic Response and Coupling Observatory (MC-DRACO), the logical
outgrowth of a sequence of STP missions, will explore plasma transport and energy conversion processes over a broad range
of spatial sizes. Designed to be a meso-/macroscope for the magnetotail, it will resolve persistent controversies and yield a
new understanding on which to build a predictive science of next generation magnetospheric meteorology.
Derived from text
Satellite Constellations; Earth Magnetosphere; Scientific Satellites
20030032487 NASA Goddard Space Flight Center, Greenbelt, MD, USA
International Laser Ranging Services (ILRS) 2001 Annual Report
Pearlman, Michael, Editor; Torrence, Mark, Editor; Noll, Carey, Editor; June 2002; 179 pp.; In English; Original contains
color illustrations
Report No.(s): NASA/TP-2002-211610; NAS 1.60-211610; Rept-2003-00851-0; No Copyright; Avail: CASI; A09, Hardcopy
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