Planetary Science Institute

Increasing nitrogen loading in the Gulf of Mexico undermines coral reef resilience

The ongoing global decline of coral reefs underscores the need to identify key mechanisms driving reef deterioration. The Flower Garden Banks (FGB) reefs in the northern Gulf are widely regarded as some of the healthiest in the continental United States, but recent disease outbre...

Exploratory Measurements of Singly Substituted and Clumped Isotopologues in Iodate Using Electrospray Ionization Mass Spectrometry

ABSTRACT Rationale Clumped isotope geochemistry can reveal the temperatures and chemical pathways at which molecules form, but it remains unexplored for most inorganic systems. Iodate (IO 3 − ) is central to ocean and atmospheric iodine cycling and to tracking radioactive iodine...

Dust Substructures and Line Perturbations driven by a Forming Planet in J16120

Abstract Hints of planet formation have been independently reported within the gap of the disc around 2MASS J16120668-301027 from millimetre continuum, infrared, and Hα observations. In this work, we present new evidence for ongoing planet formation based on Atacama Large Millime...

Magnetic insights into the aqueous alteration of CM chondrites

CM chondrites are the archetypal group of aqueously altered meteorites, preserving records of water-rock interactions on planetesimals. Here, we couple rock magnetic properties with modal mineralogy measured from 48 CM chondrites to explore aqueous alteration through its influenc...

Azimuthal Anisotropy From Multimode Waveform Modeling Reveals Layering Within the Antarctica Craton

The isotropic structure of the crust and upper mantle under Antarctica has been constrained by many studies. However, the depth dependence of seismic anisotropy, a powerful tool to characterize deformation and flow, is still poorly known. Here, we modeled three-dimensional (3-D)...

Sea Level Emulator Intercomparison Project (SLEIP) Phase 1: Assessing emulated multi-century global mean sea level projections

Abstract. Simplified sea level modelling approaches calibrated against reference data, also referred to as sea level emulators, can explore future sea level rise and associated uncertainties with low computational cost. Here, we introduce the Sea Level Emulator Intercomparison Pr...

Sensitivity of the Martian Magnetotail to Model Configuration Choices in Multispecies MHD Simulations

Abstract Numerical modeling has been a key component in the study of the Mars space environment, providing a comprehensive global representation that is not always easy to obtain in spacecraft measurements. However, there are inconsistencies in data‐model and model‐model comparis...

Detectability of Forced ENSO Changes Under Global Warming: Insights From the Recharge Oscillator

Abstract We use perfect‐model, large‐ensemble nonlinear Recharge Oscillator (RO) simulations to quantify ENSO internal variability and the detectability of forced changes in ENSO characteristics. Fixed‐parameter simulations show that linear trends in ENSO standard deviation, peri...

3D Subduction Interface Model for the Hikurangi Margin, New Zealand: Implications for Slow Slip Events

Abstract We present a new 3D Hikurangi subduction interface model by using an implicit modeling approach that integrates seismic‐reflection profiles, relocated hypocenters, focal mechanism orientations, and tomographic interpretations. The model reveals along‐strike transitions i...

Identifying heat-related diagnoses in emergency department visits among adults in Chicago: A heat-wide association study

Extreme heat is an escalating public health concern. Although prior studies have examined heat-health associations, their reliance on restricted diagnoses and diagnostic categories may miss or misclassify heat-related illness. Here, we conducted a heat-wide association study to e...

Direct speciation of ultra-trace platinum in marine ferromanganese oxides by wavelength-dispersive XAFS

Abstract Ultra-trace platinum (Pt) in marine ferromanganese oxides (FMOs) has remained inaccessible to direct XAFS analysis because of its extremely low abundance and severe interferences from co-existing elements. We achieved the first direct speciation of Pt at the 1 μg g−1 lev...

Paleomagnetic evidence for a nebular magnetic field from calcium-aluminum-rich inclusions

The initial stage of planet formation is expected to take place in a nascent protoplanetary disk (PPD) accreting onto the protostar embedded in an infalling envelope. This stage is likely accompanied by the formation of high-condensation temperature solids resembling calcium-alum...

Locating Moonquakes With Single‐Station Seismology

Abstract Renewed international interest in lunar seismometer deployments requires robust single‐station location approach for the highly scattering Moon's crust. We present an event‐location strategy using major lunar event types recorded by the Apollo seismic network. Frequency‐...

Phytoplankton community responses to 20 th century eutrophication of Swiss Plateau lakes: a proxy comparison from short sediment cores

Abstract. During the last century, temperate lakes have been strongly impacted by human eutrophication and climate change, causing shifts in phytoplankton communities and higher abundance of cyanobacteria. Paleolimnological reconstructions can extend the timeframe of observations...

Focused sparse seismic data planning for CO2 sequestration monitoring

Abstract Carbon Capture and Storage (CCS) monitoring relies on geophysical methods to track CO2 plume migration and ensure long-term storage security. While conventional 4D or repeated 3D seismic surveys provide comprehensive subsurface imaging, their high costs limit acquisition...

Viscosity of NaAlSi3O8−H2O fluids and implications for arc magmatism

Water plays a crucial role in the transport properties of silicate liquids and is especially important in subduction-zone magma source regions where conditions promote complete miscibility between water and silicate melts. However, accurately tracing the movement of fluids and vo...

Little Red Dots host Black Hole Stars: A unified family of gas-reddened AGN revealed by JWST/NIRSpec spectroscopy

Abstract We construct and characterise a sample of 146 little red dots (LRDs) across 2.0 < z < 9.3, selecting all sources with v-shaped UV-optical continua from JWST NIRSpec/PRISM spectra and compact morphologies in NIRCam/F444W imaging. We show that LRD continuum spectra are wel...

Thermal bottlenecks constrain early-life survival of native fish in regulated rivers

Climate change is reshaping thermal regimes worldwide, threatening species whose early development depends on narrow temperature ranges. Yet directly linking warming to reproductive failure in wild populations remains intractable, particularly in aquatic ecosystems. We developed...

Comparative Analysis of Ion and Electron Contributions to Ionospheric Ionization at Auroral and Subauroral Latitudes

Abstract Electron and proton precipitation into the nightside ionosphere is a key process in magnetosphere–ionosphere coupling. Although auroral electron precipitation at –10 keV is traditionally considered the main driver of auroral emissions, recent studies show that keV electr...

The effects of CO2-rock interaction on the failure mode of clay-rich sandstone

Understanding how rock formations respond to CO₂ injection is critical for geological carbon storage. This study examines the impact of CO₂-rock interaction on the failure mode of clay-rich Tuscaloosa sandstone. To simulate CO₂-rock interaction in the subsurface, we conducted CO...