scholarly journals The Moon at thermal infrared wavelengths: a benchmark for asteroid thermal models

2021 ◽  
Author(s):  
T. G. Müller ◽  
M. Burgdorf ◽  
V. Ali-Lagoa ◽  
S. A. Buehler ◽  
M. Prange
Keyword(s):  
Thermal Infrared ◽  
The Moon ◽  
Thermal Models ◽  
Infrared Wavelengths

scholarly journals Solid state convection models of the lunar internal temperature

1977 ◽  
Vol 285 (1327) ◽  
pp. 523-536 ◽  
Keyword(s):  
Solid State ◽  
Creep Behaviour ◽  
The Moon ◽  
Internal Temperature ◽  
Thermal Models ◽  
Lunar Interior

Thermal models of the Moon, which include cooling by subsolidus creep and consideration of the creep behaviour of geologic material, provide estimates of 1500- 1600 K for the temperature, and 10 21-1022 cm2/s for the viscosity of the deep lunar interior.

scholarly journals Close Cassini flybys of Saturn’s ring moons Pan, Daphnis, Atlas, Pandora, and Epimetheus

Science ◽  
2019 ◽  
Vol 364 (6445) ◽  
pp. eaat2349 ◽  
Author(s):  
B. J. Buratti ◽  
P. C. Thomas ◽  
E. Roussos ◽  
C. Howett ◽  
M. Seiß ◽  
...  
Keyword(s):  
Optical Properties ◽  
Water Vapor ◽  
Thermal Infrared ◽  
Ring System ◽  
The Moon ◽  
Volcanic Plumes ◽  
Cassini Mission ◽  
Main Ring

Saturn’s main ring system is associated with a set of small moons that either are embedded within it or interact with the rings to alter their shape and composition. Five close flybys of the moons Pan, Daphnis, Atlas, Pandora, and Epimetheus were performed between December 2016 and April 2017 during the ring-grazing orbits of the Cassini mission. Data on the moons’ morphology, structure, particle environment, and composition were returned, along with images in the ultraviolet and thermal infrared. We find that the optical properties of the moons’ surfaces are determined by two competing processes: contamination by a red material formed in Saturn’s main ring system and accretion of bright icy particles or water vapor from volcanic plumes originating on the moon Enceladus.

scholarly journals High-Resolution Fourier Transform Spectroscopy with a VLT

1984 ◽  
Vol 79 ◽  
pp. 497-497
Author(s):  
Donald N.B. Hall
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
Spectral Resolution ◽  
Thermal Infrared ◽  
The Other ◽  
High Spectral Resolution ◽  
Resolution Element ◽  
Infrared Wavelengths ◽  
Frequency Calibration ◽  
Absorption Features

The major advantages of the FTS technique are (1) multiplexing, (2) throughput, (3) instrumental profile, (4) stability of frequency calibration, and (5) spectrophotometry accuracy. The multiplex advantage is realized only if one is detector noise limited for the signal within an individual spectral-resolution element. At optical and thermal infrared wavelengths, this is only the case at high spectral resolution (≥ 50000) for modern detectors. By the time the VLT is operating one expects this to also be the case in the 1- to 2.5-micron region. At resolutions ≥ 50000 there are severe problems matching dispersive spectrographs to the VLT aperture, whereas existing FTS instruments already have adequate through-put to match to fields of a few arcsec with a VLT. When the other advantages are considered, the FTS is the instrument of choice for high-resolution (≥ 50000) spectroscopy of absorption features with a VLT. Foreseeable astrophysical applications include observations of interstellar and circumstellar features and of fully resolved profiles of photospheric and planetary lines.

MULTIFRACTAL CHARACTERIZATION OF REMOTELY SENSED VOLCANIC FEATURES: A CASE STUDY FROM KILAUEA VOLCANO, HAWAII

Fractals ◽  
2002 ◽  
Vol 10 (03) ◽  
pp. 265-274 ◽  
Author(s):  
DANY C. HARVEY ◽  
HÉLÈNE GAONAC'H ◽  
SHAUN LOVEJOY ◽  
JOHN STIX ◽  
DANIEL SCHERTZER
Keyword(s):  
Thermal Infrared ◽  
Remotely Sensed ◽  
Volcanic Field ◽  
Kilauea Volcano ◽  
Statistical Characteristics ◽  
Volcanic Gas ◽  
Kīlauea Volcano ◽  
Infrared Wavelengths

We used a multifractal approach to characterize scale by scale, the remotely sensed visible and thermal-infrared volcanic field, at Kilauea Volcano, Hawaii, USA. Our results show that (1) the observed fields exhibit a scaling behavior over a resolution range of ~ 2.5 m to 6 km, (2) they show a strong multifractality, (3) the multifractal parameters α, C1 and H are sensitive to volcanic structural classes such as vent cones, lava ponds and active to inactive lava flows, (4) vegetation area and volcanic gas plumes have a strong effect on the multifractal estimates, and (5) vegetation and cloud-free images show statistical characteristics due to topography related albedo in the visible and predominantly solar heating in the thermal infrared wavelengths.

Altitude and seasonal characteristics of aerosol backscatter at thermal infrared wavelengths using lidar observations from coastal California

1989 ◽  
Vol 94 (D7) ◽  
pp. 9897 ◽  
Author(s):  
Robert T. Menzies ◽  
Gerard M. Ancellet ◽  
David M. Tratt ◽  
Morton G. Wurtele ◽  
Jeffrey C. Wright ◽  
...  
Keyword(s):  
Thermal Infrared ◽  
Seasonal Characteristics ◽  
Infrared Wavelengths ◽  
Aerosol Backscatter ◽  
Lidar Observations

Thermal Infrared Spectra of the Moon

Icarus ◽  
1995 ◽  
Vol 115 (1) ◽  
pp. 181-190 ◽  
Author(s):  
John W. Salisbury ◽  
D.G. Murcray ◽  
W.J. Williams ◽  
R.D. Blatherwick
Keyword(s):  
Infrared Spectra ◽  
Thermal Infrared ◽  
The Moon

Effects of varying environmental conditions on emissivity spectra of bulk lunar soils: Application to Diviner thermal infrared observations of the Moon

Icarus ◽  
2017 ◽  
Vol 283 ◽  
pp. 326-342 ◽  
Author(s):  
K.L. Donaldson Hanna ◽  
B.T. Greenhagen ◽  
W.R. Patterson ◽  
C.M. Pieters ◽  
J.F. Mustard ◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Thermal Infrared ◽  
The Moon ◽  
Infrared Observations ◽  
Lunar Soils ◽  
Emissivity Spectra

scholarly journals Lunar Calibration for ASTER VNIR and TIR with Observations of the Moon in 2003 and 2017

2019 ◽  
Vol 11 (22) ◽  
pp. 2712 ◽  
Author(s):  
Kouyama ◽  
Kato ◽  
Kikuchi ◽  
Sakuma ◽  
Miura ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Near Infrared ◽  
Thermal Emission ◽  
Thermal Infrared ◽  
Calibration Method ◽  
The Other ◽  
Radiometric Calibration ◽  
The Moon ◽  
Calibration Methods ◽  
Better Than

The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), which is a multiband pushbroom sensor suite onboard Terra, has successfully provided valuable multiband images for approximately 20 years since Terra’s launch in 1999. Since the launch, sensitivity degradations in ASTER’s visible and near infrared (VNIR) and thermal infrared (TIR) bands have been monitored and corrected with various calibration methods. However, a unignorable discrepancy between different calibration methods has been confirmed for the VNIR bands that should be assessed with another reliable calibration method. In April 2003 and August 2017, ASTER observed the Moon (and deepspace) for conducting a radiometric calibration (called as lunar calibration), which can measure the temporal variation in the sensor sensitivity of the VNIR bands enough accurately (better than 1%). From the lunar calibration, 3–6% sensitivity degradations were confirmed in the VNIR bands from 2003 to 2017. Since the measured degradations from the other methods showed different trends from the lunar calibration, the lunar calibration suggests a further improvement is needed for the VNIR calibration. Sensitivity degradations in the TIR bands were also confirmed by monitoring the variation in the number of saturated pixels, which were qualitatively consistent with the onboard and vicarious calibrations.

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