cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.48577/jpl.ylhmwp
title: Self-Reliant Rovers for Increased Mission Productivity

description: Achieving consistently high levels of productivity has been a challenge for Mars surface missions. While the rovers have made major discoveries and dramatically increased our understanding of Mars, they require a great deal of interaction from the operations teams, and achieving mission objectives can take longer than anticipated when productivity is paced by the ground teams’ ability to react. We have conducted a project to explore technologies and techniques for creating SelfReliant Rovers: rovers that are able to maintain high levels of productivity with reduced reliance on ground interactions. This paper paper describes the design of Self-Reliant Rovers and a prototype implementation that we deployed on a research rover. We evaluated the system by conducting a simulated campaign in which members of the Mars Science Laboratory (Curiosity rover) science team used our rover to explore a geographical region. The evaluation demonstrated the system’s ability to maintain high levels of productivity with limited communication with operators.
DOI: 10.48577/jpl.ejjy8k
title: Interseismic Strain Accumulation on Faults Beneath Los Angeles, California

description: No abstract available.
DOI: 10.25549/independent-c69-45459
title: Reviews / summaries of complaints & personnel files (1987-1990), 1991-05-24

description: Internal Affairs Division investigative file - research forms, random sample of complaints (1987-1990), 1991 May 24. PART OF A SERIES: To better understand how LAPD management reacts to problem officers, Skadden, Arps, Slate, Meagher & Flom examined the Department's procedures regarding the identification, documentation, and response to personnel complaints. The series includes memoranda and correspondence; attorney notes; materials related to the firm's administrative capacities, including staff rosters and work plans; flow charts that illustrate the LAPD's structure and organization; and draft copies of the firm's contributions to the Commission report.
DOI: 10.48577/jpl.0rbj3l
title: Lunar Seismology: a data and instrumentation review

description: Several seismic experiments were deployed on the Moon by the astronauts during the Apollo missions. The experiments began in 1969 with Apollo 11, and continued with Apollo 12, 14, 15, 16 and 17. Instruments at Apollo 12, 14, 15, 16 and 17 remained operational until the final transmission in 1977. These remarkable experiments provide a valuable resource. Now is a good time to review this resource, since the InSight mission is returning seismic data from Mars, and seismic missions to the Moon and Europa are in development from different space agencies. We present an overview of the seismic data available from four sets of experiments on the Moon: the Passive Seismic Experiments, the Active Seismic Experiments, the Lunar Seismic Profiling Experiment and the Lunar Surface Gravimeter. For each of these, we outline the instrumentation and the data availability.We show examples of the different types of moonquakes, which are: artificial impacts, meteoroid strikes, shallow quakes (less than 200 km depth) and deep quakes (around 900 km depth). Deep quakes often occur in tight spatial clusters, and their seismic signals can therefore be stacked to improve the signal-to-noise ratio. We provide stacked deep moonquake signals from three independent sources in miniSEED format. We provide an arrival-time catalog compiled from six independent sources, as well as estimates of event time and location where available. We show statistics on the consistency between arrival-time picks from different operators. Moonquakes have a characteristic shape, where the energy rises slowly to a maximum, followed by an even longer decay time. We include a table of the times of arrival of the maximum energy tmax and the coda quality factor Qc. Finally, we outline minimum requirements for future lunar missions to the Moon. These requirements are particularly relevant to future missions which intend to share data with other agencies, and set out a path for an International Lunar Network, which can provide simultaneous multi-station observations on the Moon.
DOI: 10.15468/dl.qr7svm
title: Occurrence Download

description: A dataset containing 2010 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Plantae",
 "Geometry POLYGON((-92.197265 1.054627,-92.197265 -1.625758,-88.901367 -1.625758,-88.901367 1.054627,-92.197265 1.054627))"
 ]
}

 The dataset includes 2010 records from 23 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001518-150512124619364/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.vsbdcy
title: Ganymede, Then and Now: How Past Eccentricity may have altered Tidally Driven Coulomb Failure

description: Laplace-like resonances among Ganymede, Europa, and Io may have once led Ganymede to have an eccentricity (presently e = 0.0013) as high as ~0.07 (Showman and Malhotra, 1997). While diurnal stresses at Ganymede today are small (less than 10 kPa), a previous period of higher eccentricity may have allowed for an order of magnitude increase in the diurnal tidal stresses that could drive fault initiation and result in a past period of active tectonism. To investigate the role of tidal stresses on faulting, we use the numerical model SatStress (Wahr et al., 2009) to calculate diurnal tidal stresses on Ganymede’s surface assuming e = 0.05, representative of a more eccentric orbit in Ganymede’s past. We resolve normal and shear stresses onto discrete mapped fault segments and assess Coulomb failure criteria along three inferred shear zones on Ganymede’s surface: Dardanus Sulcus, Tiamat Sulcus, and Nun Sulci. While Coulomb failure is not expected from diurnal stressing at any of the three shear zones for a diurnal model of present-day (low) eccentricity, we do predict Coulomb failure for a past, high eccentricity case, in isolated diurnal slip windows and limited to very shallow depths (~ 100 to 250 m). In these cases, this model may provide an alternative to invoking additional stresses such as nonsynchronous rotation or true polar wander, as in previous studies (Cameron et al., 2019). Additionally, this model is in general agreement with the sense of inferred shear from imagery and structural mapping.
DOI: 10.15468/dl.2hvfhe
title: Occurrence Download

description: A dataset containing 71 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Dendrobium funiforme Blume"
 ]
}

 The dataset includes 71 records from 13 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0169899-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.hkbzmc
title: Planetary Protection Implementation on the InSight Mission

description: The InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) Mars flight system is made up of a cruise stage; an aeroshell; a backshell and parachute cone, as well as a Phoenix heritage-based lander that successfully landed in the Elysium Planitia on November 26, 2018. InSight has primary science objectives aimed to understand more about the interior of Mars and the formation and evolution of terrestrial planets. As with previous Mars missions, InSight was required to satisfy bioburden requirements and verify compliance with international treaty obligations and NASA requirements prior to launch. InSight implemented a series of policies and procedures to minimize biological risk and comply with all applicable requirements for a Planetary Protection Category IVa mission. At launch, InSight had an estimated total bacterial spore burden of 1.50 x 105 spores on the entire spacecraft, including the cruise stage, satisfying the requirement of 5 x 105 spores. The landed hardware components required less than 3 x 105 spores and a bioburden density of less than 300 spore/m2. At launch, the landed hardware of InSight contained an estimated total spore bioburden of 1.35 x 105 spores and an estimated bioburden density of 129 spores/m2.
DOI: 10.25549/independent-c69-45604
title: Reviews / summaries of complaints & personnel files (1987-1990), 1991-05-24

description: Internal Affairs Division investigative file - research forms, random sample of complaints (1987-1990), 1991 May 24. PART OF A SERIES: To better understand how LAPD management reacts to problem officers, Skadden, Arps, Slate, Meagher & Flom examined the Department's procedures regarding the identification, documentation, and response to personnel complaints. The series includes memoranda and correspondence; attorney notes; materials related to the firm's administrative capacities, including staff rosters and work plans; flow charts that illustrate the LAPD's structure and organization; and draft copies of the firm's contributions to the Commission report.
DOI: 10.48577/jpl.h32q63
title: Hot Dust-Obscured Galaxies with Excess Blue Light

description: Hot Dust-Obscured Galaxies (Hot DOGs) are among the most luminous galaxies in the Universe. Powered by highly obscured, possibly Compton-thick, active galactic nuclei (AGNs), Hot DOGs are characterized by SEDs that are very red in the mid-IR yet dominated by the host galaxy stellar emission in the UV and optical. An earlier study identified a sub-sample of Hot DOGs with significantly enhanced UV emission. One target, W0204–0506, was studied in detail and, based on Chandra observations, it was concluded that the enhanced emission was most likely due to either extreme unobscured star-formation (SFR &gt; 1000 M⊙ yr−1) or to light from the highly obscured AGN scattered by gas or dust into our line of sight. Here, we present a follow-up study of W0204–0506 as well as two more Hot DOGs with excess UV emission. For the two new objects we obtained Chandra/ACIS-S observations, and for all three targets we obtained HST/WFC3 F555W and F160W imaging. The analysis of these observations, combined with multi-wavelength photometry and UV/optical spectroscopy suggest that UV emission is most likely dominated by light from the central highly obscured, hyper-luminous AGN that has been scattered into our line of sight, by either gas or dust. We cannot decisively rule out, however, that star-formation or a second AGN in the system may significantly contribute to the UV excess of these targets.
DOI: 10.48577/jpl.4anbqv
title: The Effects of Mirror Seeing on High-Contrast Adaptive Optics 2 Instruments

description: Ground-based direct imaging surveys like the Gemini Planet Imager Exoplanet Survey (GPIES) rely on Adaptive Optics (AO) systems to image and characterize exoplanets that are up to a million times fainter than their host stars. One factor that can reduce AO performance is turbulence induced by temperature differences in the instrument’s immediate surroundings (e.g.: “dome seeing” or “mirror seeing”). In this analysis we use science observations, AO telemetry, and environmental data from September 2014 to February 2017 of the GPIES campaign to quantify the effects of “mirror seeing” on the performance of the GPI instrument. We show that GPI performance is optimal when the primary mirror (M1) is in equilibrium with the outside air temperature. We then examine the characteristics of mirror seeing by calculating the power spectral densities (PSD) of spatial and temporal Fourier modes. Inside the inertial range of the PSDs, we find that the spatial PSD amplitude increases when M1 is out of equilibrium and that the integrated turbulence may exhibit deviations from Kolmogorov atmospheric turbulence models and from the 1-layer frozen flow model. We conclude with an assessment of the current temperature control and ventilation strategy at Gemini South.
DOI: 10.48577/jpl.t1ql9g
title: Orbit-Spin Coupling and the Triggering of the Martian Planet-Encircling Dust Storm of 2018

description: No abstract available.
DOI: 10.15468/dl.p8v7y6
title: Occurrence Download

description: A dataset containing 11262 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Spain",
 {
 "or" : [
 "TaxonKey is Galium viridiflorum Boiss. & Reut.",
 "TaxonKey is Salix caprea L.",
 "TaxonKey is Salix eleagnos Scop.",
 "TaxonKey is Aristolochia pallida subsp. castellana E.Nardi",
 "TaxonKey is Adenocarpus desertorum Castrov.",
 "TaxonKey is Armeria genesiana subsp. belmontei (P.Silva) Nieto Fel.",
 "TaxonKey is Marsilea strigosa Willd.",
 "TaxonKey is Antirrhinum grosii Font Quer",
 "TaxonKey is Scutellaria alpina L.",
 "TaxonKey is Ceratocapnos heterocarpa Durieu",
 "TaxonKey is Galega orientalis Lam.",
 "TaxonKey is Lavatera triloba Jacq.",
 "TaxonKey is Asplenium sagittatum (DC.) M.Laínz",
 "TaxonKey is Centaurea podospermifolia Loscos & Pardo",
 "TaxonKey is Erodium glandulosum Dumort.",
 "TaxonKey is Pinguicula dertosensis (Cañig.) Mateo & M.B.Crespo",
 "TaxonKey is Rubus idaeus L.",
 "TaxonKey is Macrochloa tenacissima (L.) Kunth",
 "TaxonKey is Dryopteris submontana (Fraser-Jenk. & Jermy) Fraser-Jenk.",
 "TaxonKey is Serapias perez-chiscanoi Acedo",
 "TaxonKey is Erodium moureti Pit.",
 "TaxonKey is Sorbus domestica L.",
 "TaxonKey is Scrophularia oxyrhyncha Coincy",
 "TaxonKey is Limodorum trabutianum Batt.",
 "TaxonKey is Anchusa puechi Valdés"
 ]
 }
 ]
}

 The dataset includes 11262 records from 80 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001518-150721130643939/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/independent-c69-45433
title: Reviews / summaries of complaints & personnel files (1987-1990), 1991-05-24

description: Internal Affairs Division investigative file - research forms, random sample of complaints (1987-1990), 1991 May 24. PART OF A SERIES: To better understand how LAPD management reacts to problem officers, Skadden, Arps, Slate, Meagher & Flom examined the Department's procedures regarding the identification, documentation, and response to personnel complaints. The series includes memoranda and correspondence; attorney notes; materials related to the firm's administrative capacities, including staff rosters and work plans; flow charts that illustrate the LAPD's structure and organization; and draft copies of the firm's contributions to the Commission report.
DOI: 10.48577/jpl.wae2oc
title: Bulk metallic glass processing in microgravity – Thermophysical properties of Zr52.5Cu17.9Ni14.6Al10Ti5 measured in the liquid phase

description: Bulk metallic glasses are of critical interest for a wide range of applications, including their use in spacecraft gearboxes and mechanisms due to their excellent low-temperature, unlubricated wear resistance. Also of interest, is the potential for in-space manufacturing of metal alloys and the use of microgravity to determine fundamental thermophysical properties to inform ground-based modeling and experimentation. In this work, a Zr-based bulk metallic glass was processed in the electromagnetic levitator ISS-EML to determine undercooling, electrical resistivity, specific heat capacity, surface tension, and viscosity. A 6.5 mm sphere was vitrified during the processing, resulting in the first bulk metallic glass manufactured on board the international space station (ISS).
DOI: 10.15468/dl.jr928s
title: Occurrence Download

description: A dataset containing 212 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Camellia chekiangoleosa Hu"
 ]
}

 The dataset includes 212 records from 22 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0169902-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.7teopn
title: The insulating effect of methane clathrate crust on Titan’s thermal evolution

description: Saturn’s largest moon Titan is unique for its dense, methane rich atmosphere with ongoing complex organics chemistry, and the hydrocarbon lakes and seas on its frigid surface. Titan also harbors a subsurface water ocean and its ice shell is likely capped by a thick crust of low conductivity methane clathrates that are very stable under Titan’s surface conditions. Here, we investigate the effect of this insulating clathrate crust on convection in the ice shell. Without the clathrate crust, convection occurs below a stagnant lid that is a few tens of kilometers thick and limits the exchange between the surface and the deep ocean. We show that a 5–10 km thick clathrate crust reduces the stagnant lid thickness about threefold thus increasing the potential for the ocean-surface exchange. Moreover, the insulating effect of clathrates dramatically decreases the amount of extracted heat thus limiting the freezing rate of Titan’s ocean.
DOI: 10.25549/independent-c69-45562
title: Reviews / summaries of complaints & personnel files (1987-1990), 1991-05-24

description: Internal Affairs Division investigative file - research forms, random sample of complaints (1987-1990), 1991 May 24. PART OF A SERIES: To better understand how LAPD management reacts to problem officers, Skadden, Arps, Slate, Meagher & Flom examined the Department's procedures regarding the identification, documentation, and response to personnel complaints. The series includes memoranda and correspondence; attorney notes; materials related to the firm's administrative capacities, including staff rosters and work plans; flow charts that illustrate the LAPD's structure and organization; and draft copies of the firm's contributions to the Commission report.
DOI: 10.48577/jpl.oo606d
title: Star catalog position and proper motion corrections in asteroid astrometry II: The Gaia era

description: No abstract available.
DOI: 10.48577/jpl.vqwdbb
title: Orbital Period Change of Dimorphos Due to the DART Kinetic Impact

description: The Double Asteroid Redirection Test (DART) spacecraft successfully performed the first test of a kinetic impactor for asteroid deflection by impacting Dimorphos, the secondary of near-Earth binary asteroid (65803) Didymos, and changing the orbital period of Dimorphos. A change in orbital period of approximately 7 minutes was expected if the incident momentum from the DART spacecraft was directly transferred to the asteroid target in a perfectly inelastic collision1, but studies of the probable impact conditions and asteroid properties indicated that a considerable momentum enhancement (𝜷) was possible2,3. In the years prior to impact, we used lightcurve observations to accurately determine the pre-impact orbit parameters of Dimorphos with respect to Didymos4–6. Using new Earth-based lightcurve and radar observations, two independent approaches determined identical values of the change in the orbital period of Dimorphos as a result of the DART kinetic impact to be -33.0 ± 1.0 (3𝜎) minutes. This large orbit period change suggests that ejecta contributed a significant amount of momentum to the asteroid beyond what the DART spacecraft carried.
DOI: 10.15468/dl.8kc87q
title: Occurrence Download

description: A dataset containing 143 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Digitonthophagus gazella (Fabricius, 1787)",
 "Country is Mexico"
 ]
}

 The dataset includes 143 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001518-150831095807960/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.xfjbfm
title: On the discovery of hyper-hydrated sodium chloride hydrates, stable at icy moon conditions.

description: Sodium chloride is expected to be found on many of the surfaces of icy moons like Europa and Ganymede. However, spectral identification remains elusive as no known NaCl hydrates can match current observations. Working at relevant conditions for icy worlds, we discover three new "hyperhydrated" NaCl (SC) hydrates, and refined two crystal structures (2NaCl·17H2O (SC8.5) ; NaCl·13H2O (SC13)). At these conditions, the dissociation of Na+ and Cl- ions within these crystal lattices allows for the high incorporation of water molecules and their hyper-hydration. This suggest that a great diversity of new hydrated crystalline phases of common salts might be found at similar conditions. Thermodynamic constraints indicate that SC8.5 is stable at room pressure below 235 K, implying it should be the most abundant NaCl hydrate on icy surfaces of the outer solar system and beyond. This discovery enables to explain the mismatch between observations and data on NaCl hydrates and the urgent need for new spectral data on hyper-hydrates.
DOI: 10.15468/dl.b8r9pg
title: Occurrence Download

description: A dataset containing 10 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Baccaurea ptychopyxis Airy Shaw"
 ]
}

 The dataset includes 10 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0034096-240229165702484/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/independent-c69-45600
title: Reviews / summaries of complaints & personnel files (1987-1990), 1991-05-24

description: Internal Affairs Division investigative file - research forms, random sample of complaints (1987-1990), 1991 May 24. PART OF A SERIES: To better understand how LAPD management reacts to problem officers, Skadden, Arps, Slate, Meagher & Flom examined the Department's procedures regarding the identification, documentation, and response to personnel complaints. The series includes memoranda and correspondence; attorney notes; materials related to the firm's administrative capacities, including staff rosters and work plans; flow charts that illustrate the LAPD's structure and organization; and draft copies of the firm's contributions to the Commission report.
DOI: 10.48577/jpl.pzn7ug
title: Total Ionizing Dose Response of a 22-nm Compiled FullyDepleted-Silicon-on-Insulator Static Random Access Memory

description: The results of total ionizing dose (TID) experiments on fully-depleted silicon-on-insulator (FDSOI) static random access memory (SRAM) are presented. Using 60Co gamma irradiation, tests were conducted at multiple voltages and with and without read and write assists. The results demonstrate cell stability past 200 krad(Si) TID in standard operational modes. The impact of read and write assists and read timing via margin mode tests are examined. We also report input-output (IO) level translation circuit failures, as well as anomalous circuit failures attributable to IO at relatively low TID dose. Finally, we show post-TID anneal and low voltage SRAM results.