The tidal–rotational shape of the Moon and evidence for polar wander

¹

,

²

,

³

2018

Abstract

Smart CitationsHow this paper cites the one you are viewing

“…(1) Our proposed large Q for the early Earth is consistent with studies of lunar obliquity (Chen & Nimmo, ) and orbital history (Bills & Ray, ; Lambeck & Pullan, ). (2) Although our formulation for fossil bulge formation differs significantly from previous studies, it is interesting to note that our conclusion of a ~ 32 R E when the bulge formation is completed is consistent with Garrick‐Bethell et al () but larger than those from Lambeck and Pullan () and Matsuyama (). (3) We reiterate that our results on Q are obtained with k 2 = 0.3 (i.e., elastic tidal Love number) (e.g., Lambeck & Pullan, ), although the orbital evolution depends on ratio k 2 /Q (equation ).…”

Section: Conclusion and Discussion

supporting

confidence: 85%

Formation of the Lunar Fossil Bulges and Its Implication for the Early Earth and Moon

¹

,

²

,

³

2018

Abstract

Smart CitationsHow this paper cites the one you are viewing

“…(1) Our proposed large Q for the early Earth is consistent with studies of lunar obliquity (Chen & Nimmo, ) and orbital history (Bills & Ray, ; Lambeck & Pullan, ). (2) Although our formulation for fossil bulge formation differs significantly from previous studies, it is interesting to note that our conclusion of a ~ 32 R E when the bulge formation is completed is consistent with Garrick‐Bethell et al () but larger than those from Lambeck and Pullan () and Matsuyama (). (3) We reiterate that our results on Q are obtained with k 2 = 0.3 (i.e., elastic tidal Love number) (e.g., Lambeck & Pullan, ), although the orbital evolution depends on ratio k 2 /Q (equation ).…”

Section: Conclusion and Discussion

supporting

confidence: 85%

Near/far side asymmetry in the tidally heated Moon

Quillen

¹

,

Martini

²

,

Nakajima

³

2019

Icarus

Abstract

Smart CitationsHow this paper cites the one you are viewing

“…We have explored the possibility that the distribution of tidal heating could affect the difference in near and far side lunar crust thickness. Our scenario is similar to that proposed to explain thinner crust at the poles by Garrick-Bethell et al (2010), (also see Garrick-Bethell et al 2014) however our model relies on proximity to the Earth as it depends on the strength of the Earth's octupole gravitational potential term. Our mass spring simulations are not restricted to spherical symmetry and we used that flexibility to search for asymmetric heating and sensitivity of the tidal heating pattern to crustal thickness variations.…”

Section: Summary and Discussion

supporting

confidence: 71%

Evidence for an Ancient Near‐Equatorial Lunar Dipole From Higher Precision Inversions of Crustal Magnetization

Maxwell

¹

,

Garrick‐Bethell

²

2020

JGR Planets

Abstract

Smart CitationsHow this paper cites the one you are viewing

“…Paleopole location reported by Garrick‐Bethell et al. (2014), Keane and Matsuyama (2014), and Siegler et al. (2016) are also shown.…”

Section: Results

supporting

confidence: 53%

“…The relatively small (dm < 25°) paleopole uncertainties (Figure 12) strengthen the argument that some magnetic paleopoles are indeed near the present-day equator as found by Oliveira and Wieczorek (2017). Using the degree-2 gravity and topography of the Moon, Garrick-Bethell et al (2014) and Keane and Matsuyama (2014) independently estimated the extent of true polar wander on the Moon since as early as crust formation, and found co-latitude changes of <36°. Siegler et al (2016) (like at the Reiner Gamma anomaly), ∼8 (like at the Airy anomaly), 4, and 1.…”

Section: Evidence For Near-equatorial Lunar Paleopoles and A Nonaxial

supporting

confidence: 61%

Formation of the Lunar Fossil Bulges and Its Implication for the Early Earth and Moon

¹

,

²

,

³

2018

Abstract

Smart CitationsHow this paper cites the one you are viewing

“…(1) Our proposed large Q for the early Earth is consistent with studies of lunar obliquity (Chen & Nimmo, ) and orbital history (Bills & Ray, ; Lambeck & Pullan, ). (2) Although our formulation for fossil bulge formation differs significantly from previous studies, it is interesting to note that our conclusion of a ~ 32 R E when the bulge formation is completed is consistent with Garrick‐Bethell et al () but larger than those from Lambeck and Pullan () and Matsuyama (). (3) We reiterate that our results on Q are obtained with k 2 = 0.3 (i.e., elastic tidal Love number) (e.g., Lambeck & Pullan, ), although the orbital evolution depends on ratio k 2 /Q (equation ).…”

Section: Conclusion and Discussion

supporting

confidence: 85%

Near/far side asymmetry in the tidally heated Moon

Quillen

¹

,

Martini

²

,

Nakajima

³

2019

Icarus

Abstract

Smart CitationsHow this paper cites the one you are viewing

“…We have explored the possibility that the distribution of tidal heating could affect the difference in near and far side lunar crust thickness. Our scenario is similar to that proposed to explain thinner crust at the poles by Garrick-Bethell et al (2010), (also see Garrick-Bethell et al 2014) however our model relies on proximity to the Earth as it depends on the strength of the Earth's octupole gravitational potential term. Our mass spring simulations are not restricted to spherical symmetry and we used that flexibility to search for asymmetric heating and sensitivity of the tidal heating pattern to crustal thickness variations.…”

Section: Summary and Discussion

supporting

confidence: 71%

Evidence for an Ancient Near‐Equatorial Lunar Dipole From Higher Precision Inversions of Crustal Magnetization

Maxwell

¹

,

Garrick‐Bethell

²

2020

JGR Planets

Abstract

Smart CitationsHow this paper cites the one you are viewing

“…Paleopole location reported by Garrick‐Bethell et al. (2014), Keane and Matsuyama (2014), and Siegler et al. (2016) are also shown.…”

Section: Results

supporting

confidence: 53%

“…The relatively small (dm < 25°) paleopole uncertainties (Figure 12) strengthen the argument that some magnetic paleopoles are indeed near the present-day equator as found by Oliveira and Wieczorek (2017). Using the degree-2 gravity and topography of the Moon, Garrick-Bethell et al (2014) and Keane and Matsuyama (2014) independently estimated the extent of true polar wander on the Moon since as early as crust formation, and found co-latitude changes of <36°. Siegler et al (2016) (like at the Reiner Gamma anomaly), ∼8 (like at the Airy anomaly), 4, and 1.…”

Section: Evidence For Near-equatorial Lunar Paleopoles and A Nonaxial

supporting

confidence: 61%

Formation of the Lunar Fossil Bulges and Its Implication for the Early Earth and Moon

¹

,

²

,

³

2018

Abstract

Smart CitationsHow this paper cites the one you are viewing

“…(1) Our proposed large Q for the early Earth is consistent with studies of lunar obliquity (Chen & Nimmo, ) and orbital history (Bills & Ray, ; Lambeck & Pullan, ). (2) Although our formulation for fossil bulge formation differs significantly from previous studies, it is interesting to note that our conclusion of a ~ 32 R E when the bulge formation is completed is consistent with Garrick‐Bethell et al () but larger than those from Lambeck and Pullan () and Matsuyama (). (3) We reiterate that our results on Q are obtained with k 2 = 0.3 (i.e., elastic tidal Love number) (e.g., Lambeck & Pullan, ), although the orbital evolution depends on ratio k 2 /Q (equation ).…”

Section: Conclusion and Discussion

supporting

confidence: 85%

Near/far side asymmetry in the tidally heated Moon

Quillen

¹

,

Martini

²

,

Nakajima

³

2019

Icarus

Abstract

Smart CitationsHow this paper cites the one you are viewing

“…We have explored the possibility that the distribution of tidal heating could affect the difference in near and far side lunar crust thickness. Our scenario is similar to that proposed to explain thinner crust at the poles by Garrick-Bethell et al (2010), (also see Garrick-Bethell et al 2014) however our model relies on proximity to the Earth as it depends on the strength of the Earth's octupole gravitational potential term. Our mass spring simulations are not restricted to spherical symmetry and we used that flexibility to search for asymmetric heating and sensitivity of the tidal heating pattern to crustal thickness variations.…”

Section: Summary and Discussion

supporting

confidence: 71%

Evidence for an Ancient Near‐Equatorial Lunar Dipole From Higher Precision Inversions of Crustal Magnetization

Maxwell

¹

,

Garrick‐Bethell

²

2020

JGR Planets

Abstract

Smart CitationsHow this paper cites the one you are viewing

“…Paleopole location reported by Garrick‐Bethell et al. (2014), Keane and Matsuyama (2014), and Siegler et al. (2016) are also shown.…”

Section: Results

supporting

confidence: 53%

“…The relatively small (dm < 25°) paleopole uncertainties (Figure 12) strengthen the argument that some magnetic paleopoles are indeed near the present-day equator as found by Oliveira and Wieczorek (2017). Using the degree-2 gravity and topography of the Moon, Garrick-Bethell et al (2014) and Keane and Matsuyama (2014) independently estimated the extent of true polar wander on the Moon since as early as crust formation, and found co-latitude changes of <36°. Siegler et al (2016) (like at the Reiner Gamma anomaly), ∼8 (like at the Airy anomaly), 4, and 1.…”

Section: Evidence For Near-equatorial Lunar Paleopoles and A Nonaxial

supporting

confidence: 61%