Tor Berger
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View article: Observations of Igneous Subsurface Stratigraphy during the Jezero Crater Floor Rapid Traverse from the RIMFAX Ground-penetrating Radar
Observations of Igneous Subsurface Stratigraphy during the Jezero Crater Floor Rapid Traverse from the RIMFAX Ground-penetrating Radar Open
Perseverance traversed the eastern, northern, and western margins of the Séítah formation inlier on the rover’s western fan front approach. Mapping the stratigraphy and extent of the Máaz and Séítah formations is key to understanding the d…
View article: Geological Modeling of Subsurface Structures from RIMFAX Ground Penetrating Radar Observations in Jezero Crater, Mars.  
Geological Modeling of Subsurface Structures from RIMFAX Ground Penetrating Radar Observations in Jezero Crater, Mars.   Open
Introduction:  NASA's Perseverance Rover is exploring the Jezero Crater carrying the RIMFAX ground penetrating radar. RIMFAX has acquired a continuous subsurface radar image at 10 cm intervals along the rover’s > 25 km long grou…
View article: Assessing Radar Attenuation in RIMFAX Soundings at the Jezero Western Fan Front, Mars
Assessing Radar Attenuation in RIMFAX Soundings at the Jezero Western Fan Front, Mars Open
Estimates of radar attenuation in the shallow Martian subsurface are retrieved from RIMFAX soundings along the Perseverance rover traverse. Specifically, analyzed data is from the Hawksbill Gap area during the rover's first drives onto the…
View article: Ground penetrating radar observations of the contact between the western delta and the crater floor of Jezero crater, Mars
Ground penetrating radar observations of the contact between the western delta and the crater floor of Jezero crater, Mars Open
The delta deposits in Jezero crater contain sedimentary records of potentially habitable conditions on Mars. NASA’s Perseverance rover is exploring the Jezero western delta with a suite of instruments that include the RIMFAX ground penetra…
View article: Mineralogy, Morphology, and Emplacement History of the Maaz Formation on the Jezero Crater Floor From Orbital and Rover Observations
Mineralogy, Morphology, and Emplacement History of the Maaz Formation on the Jezero Crater Floor From Orbital and Rover Observations Open
The first samples collected by the Perseverance rover on the Mars 2020 mission were from the Maaz formation, a lava plain that covers most of the floor of Jezero crater. Laboratory analysis of these samples back on Earth would provide impo…
View article: RIMFAX Ground Penetrating Radar Reveals Dielectric Permittivity and Rock Density of Shallow Martian Subsurface
RIMFAX Ground Penetrating Radar Reveals Dielectric Permittivity and Rock Density of Shallow Martian Subsurface Open
The Mars 2020 Perseverance Rover is equipped with the RIMFAX ground penetrating radar instrument which has been continuously surveying the shallow subsurface during the rover's journey. Within the first 379 mission days, we identify hyperb…
View article: Rock Properties of Shallow Martian Subsurface with the RIMFAX Ground Penetrating Radar
Rock Properties of Shallow Martian Subsurface with the RIMFAX Ground Penetrating Radar Open
The RIMFAX ground penetrating radar instrument on board the Mars 2020 Perseverance Rover has been continuously sounding the subsurface alongthe Rover traverse. In the data of the first 379 mission days on the Jezero Crater Floor we are abl…
View article: Radar Attenuation in the Shallow Martian Subsurface: RIMFAX Time‐Frequency Analysis and Constant‐Q Characterization Over Jezero Crater Floor
Radar Attenuation in the Shallow Martian Subsurface: RIMFAX Time‐Frequency Analysis and Constant‐Q Characterization Over Jezero Crater Floor Open
Attenuation of radar waves in the subsurface can be quantified with a constant‐Q approximation through time‐frequency analysis. We implement the centroid frequency‐shift method and study Radar Imager for Mars' Subsurface Exploration (RIMFA…
View article: Mineralogy, morphology, and emplacement history of the Maaz formation on the Jezero crater floor from orbital and rover observations
Mineralogy, morphology, and emplacement history of the Maaz formation on the Jezero crater floor from orbital and rover observations Open
The first samples collected by the Perseverance rover on the Mars 2020 mission were from the Maaz formation, a lava plain that covers most of the floor of Jezero crater. Laboratory analysis of these samples back on Earth will provide impor…
View article: Ground penetrating radar observations of subsurface structures in the floor of Jezero crater, Mars
Ground penetrating radar observations of subsurface structures in the floor of Jezero crater, Mars Open
The Radar Imager for Mars Subsurface Experiment instrument has conducted the first rover-mounted ground-penetrating radar survey of the Martian subsurface. A continuous radar image acquired over the Perseverance rover’s initial ~3-kilomete…
View article: Radar Imager for Mars’ Subsurface Experiment—RIMFAX
Radar Imager for Mars’ Subsurface Experiment—RIMFAX Open
The Radar Imager for Mars’ Subsurface Experiment (RIMFAX) is a Ground Penetrating Radar on the Mars 2020 mission’s Perseverance rover, which is planned to land near a deltaic landform in Jezero crater. RIMFAX will add a new dimension to ro…
View article: The 2015 - Present Rise of the GCR as observed by RAD on Mars
The 2015 - Present Rise of the GCR as observed by RAD on Mars Open
The radiation exposure due to galactic cosmic rays has been rising since early 2015 and is
\nreaching some of the highest levels observed in the space age. This observation is not limited
\nto the near-Earth space environment, but is also …
View article: Experimental investigation into radar‐based central blood pressure estimation
Experimental investigation into radar‐based central blood pressure estimation Open
To assess whether radar technology can be used for monitoring blood pressure via information from the aorta, two experiments were performed: (i) measurements on a phantom model and (ii) acquisitions on a human subject for in vivo experimen…