S. Nagihara
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View article: The Lunar Instrumentation for Subsurface Thermal Exploration with Rapidity (LISTER) on Blue Ghost Mission 1 to Mare Crisium. I. Pneumatic Excavation of Regolith
The Lunar Instrumentation for Subsurface Thermal Exploration with Rapidity (LISTER) on Blue Ghost Mission 1 to Mare Crisium. I. Pneumatic Excavation of Regolith Open
The Lunar Instrumentation for Subsurface Thermal Exploration with Rapidity (LISTER) is the first robotically deployed subsurface thermal probe that actively excavates lunar regolith and makes scientific measurements at multiple depths. It …
View article: A Global Survey of Lunar Surface Thorium Anomalies Associated with Impact Basins
A Global Survey of Lunar Surface Thorium Anomalies Associated with Impact Basins Open
Radionuclides (e.g., thorium, uranium, and potassium) are the major sources of the Moon’s endogenic heat. While their surface occurrence can be mapped from orbit by gamma-ray spectrometry, knowledge of their subsurface distribution is cruc…
View article: Pre-landing Assessment of the Surface and Shallow Subsurface Thermal Setting of Mare Crisium of the Moon for the Heat Flow Measurement Planned on the Blue Ghost 1 Mission
Pre-landing Assessment of the Surface and Shallow Subsurface Thermal Setting of Mare Crisium of the Moon for the Heat Flow Measurement Planned on the Blue Ghost 1 Mission Open
In 2024, under NASA’s Commercial Lunar Payload Services initiative, a robotic lander will touch down in Mare Crisium of the Moon and deploy a heat flow probe. Ideally, the probe should penetrate the regolith deep enough (1.5–2 m) to avoid …
View article: Seasonal Variations of Soil Thermal Conductivity at the InSight Landing Site
Seasonal Variations of Soil Thermal Conductivity at the InSight Landing Site Open
The heat flow and physical properties package measured soil thermal conductivity at the landing site in the 0.03–0.37 m depth range. Six measurements spanning solar longitudes from 8.0° to 210.0° were made and atmospheric pressure at the s…
View article: Seasonal Variations of Soil Thermal Conductivity at the InSight Landing Site
Seasonal Variations of Soil Thermal Conductivity at the InSight Landing Site Open
The heat flow and physical properties package measured soil thermal conductivity at the landing site in the 0.03 to 0.37 m depth range. Six measurements spanning solar longitudes from 8.0$^\circ$ to 210.0$^\circ$ were made and atmospheric …
View article: An autonomous lunar geophysical experiment package (ALGEP) for future space missions
An autonomous lunar geophysical experiment package (ALGEP) for future space missions Open
View article: The InSight-HP3 mole on Mars: Lessons learned from attempts to penetrate to depth in the Martian soil
The InSight-HP3 mole on Mars: Lessons learned from attempts to penetrate to depth in the Martian soil Open
View article: The Lunar Geophysical Network Landing Sites Science Rationale
The Lunar Geophysical Network Landing Sites Science Rationale Open
The Lunar Geophysical Network (LGN) mission is proposed to land on the Moon in 2030 and deploy packages at four locations to enable geophysical measurements for 6–10 yr. Returning to the lunar surface with a long-lived geophysical network …
View article: Thermal Conductivity of the Martian Soil at the InSight Landing Site From HP <sup>3</sup> Active Heating Experiments
Thermal Conductivity of the Martian Soil at the InSight Landing Site From HP <sup>3</sup> Active Heating Experiments Open
The heat flow and physical properties package (HP 3 ) of the InSight Mars mission is an instrument package designed to determine the martian planetary heat flow. To this end, the package was designed to emplace sensors into the martian sub…
View article: ODP Leg 166, Hole 1007C - Well Logging Data
ODP Leg 166, Hole 1007C - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: ODP Leg 166, Hole 1003D - Well Logging Data
ODP Leg 166, Hole 1003D - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: ODP Leg 166, Hole 1005C - Well Logging Data
ODP Leg 166, Hole 1005C - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: ODP Leg 166, Hole 1006A - Well Logging Data
ODP Leg 166, Hole 1006A - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: ODP Leg 166, Hole 1003D - Well Logging Data
ODP Leg 166, Hole 1003D - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: ODP Leg 166, Hole 1005C - Well Logging Data
ODP Leg 166, Hole 1005C - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: ODP Leg 166, Hole 1006A - Well Logging Data
ODP Leg 166, Hole 1006A - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: ODP Leg 166, Hole 1005A - Well Logging Data
ODP Leg 166, Hole 1005A - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: ODP Leg 166, Hole 1005A - Well Logging Data
ODP Leg 166, Hole 1005A - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: ODP Leg 166, Hole 1007C - Well Logging Data
ODP Leg 166, Hole 1007C - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: The scientific rationale for deployment of a long-lived geophysical network on the Moon
The scientific rationale for deployment of a long-lived geophysical network on the Moon Open
International audience
View article: Results from InSight's First Full Martian Year
Results from InSight's First Full Martian Year Open
View article: Thermal Conductivity of the Martian Soil at the InSight Landing site from HP$^{3}$ Active Heating Experiments
Thermal Conductivity of the Martian Soil at the InSight Landing site from HP$^{3}$ Active Heating Experiments Open
The heat flow and physical properties package (HP$^3$) of the InSight Mars mission is an instrument package designed to determine the martian planetary heat flow. To this end, the package was designed to emplace sensors into the martian su…
View article: The Lunar Geophysical Network Landing Sites Science Rationale
The Lunar Geophysical Network Landing Sites Science Rationale Open
The Lunar Geophysical Network (LGN) mission is proposed to land on the Moon in 2030 and deploy packages at four locations to enable geophysical measurements for 6–10 yr. Returning to the lunar surface with a long-lived geophysical network …
View article: Initial results from the InSight mission on Mars
Initial results from the InSight mission on Mars Open
View article: The Importance of Measuring Heat Flux Near the Lunar South Pole
The Importance of Measuring Heat Flux Near the Lunar South Pole Open
On the Moon, in situ measurements of heat flow were made at the Apollo 15 and 17 landing sites [1-3] and are planned to be made in Mare Crisium on the 2023 Commercial Lunar Payload System (CLPS) mission. Measuring heat flow near the lunar …
View article: Estimation of Mars Regolith Temperatures Undisturbed by the InSight HP3 Probe Penetration by Extrapolation of Cooling Curves Recorded During Scheduled Stops in Probe Penetration
Estimation of Mars Regolith Temperatures Undisturbed by the InSight HP3 Probe Penetration by Extrapolation of Cooling Curves Recorded During Scheduled Stops in Probe Penetration Open
View article: Examination of the Long‐Term Subsurface Warming Observed at the Apollo 15 and 17 Sites Utilizing the Newly Restored Heat Flow Experiment Data From 1975 to 1977
Examination of the Long‐Term Subsurface Warming Observed at the Apollo 15 and 17 Sites Utilizing the Newly Restored Heat Flow Experiment Data From 1975 to 1977 Open
The Apollo heat flow experiment (HFE) was conducted at landing sites 15 and 17. On Apollo 15, surface and subsurface temperatures were monitored from July 1971 to January 1977. On Apollo 17, monitoring took place from December 1972 to Sept…
View article: Characterization of Geothermal Anomalies in the Louisiana Continental Shelf, Gulf of Mexico, Using Corrected Bottom-Hole Temperatures
Characterization of Geothermal Anomalies in the Louisiana Continental Shelf, Gulf of Mexico, Using Corrected Bottom-Hole Temperatures Open
Some localized, high geothermal-gradient anomalies are observed in the continental shelf off southwestern Louisiana. While typical geothermal gradients in the Louisiana shelf range from .013 °C/m to .035 °C/m, those in the anomalous areas …
View article: Geothermal gradients of the northern continental shelf of the Gulf of Mexico
Geothermal gradients of the northern continental shelf of the Gulf of Mexico Open
A wide, systematic variation of sedimentary geothermal gradients has been previously observed along the northern continental shelf of the Gulf of Mexico. From east to west, geothermal gradients change from 25 to 30 °C/km off Alabama to low…