Contribute Geolocation Data

Help us add geographic metadata to scientific works!

The works listed below have been harvested from various scientific sources but do not have geolocation data yet. If you know the geographic location or area mentioned in any of these works, you can help us improve our database.

Know a publication that should be in OPTIMAP? Enter its DOI and we will fetch its metadata from Crossref and enrich it automatically. If we already have it, you will be taken to its page.

Please log in to add works by DOI — use the user menu at the top right of the page.

Showing 10151 to 10200 of 22070 works

Assessing origins of end-Triassic tholeiites from Eastern North America using hafnium isotopes

The driving processes responsible for producing the Central Atlantic Magmatic Province, the Large Igneous Province associated with end-Triassic rifting of Pangea, remain largely d…

Observations of the size distribution of frazil ice in an Ice Shelf Water plume

The size distribution of frazil ice is currently unconstrained in ice shelf cavity modeling. Here we observe the time-dependent behavior of the number and size of frazil ice parti…

Mitigating NOx emissions does not help alleviate wintertime particulate pollution in Beijing-Tianjin-Hebei (BTH), China

Stringent mitigation measures have reduced wintertime PM2.5 concentrations by 42.2% from 2013 to 2018 in the BTH. The observed nitrate aerosols have not exhibited a significant de…

Modelling the chemo-mechanical responses of solid solutions far from equilibrium under heterogeneous stresses

We present a coupled thermodynamically-consistent framework for the reactive chemo-mechanical responses of solid solutions. Specifically, we focus on chemically active solid solut…

A Late Cretaceous-Eocene Geomagnetic Polarity Time Scale (MQSD20) that steadies spreading rates on multiple mid-ocean r…

Magnetic anomalies over mid-ocean ridge flanks record the history of geomagnetic field reversals, and the width of magnetized crustal blocks can be combined with absolute dates to…

Record-breaking Meiyu rainfall around Yangtze River in 2020 regulated by the subseasonal phase transition of North Atla…

In 2020, the long-persisting Meiyu season around the Yangtze River (YR) started in early-June and ended in mid­–late-July. Its accumulated precipitation amount broke the record si…

Morphology of Jupiter's Polar Auroral Bright Spot Emissions via Juno-UVS Observations

Since 2016, the Juno-UVS instrument has been taking spectral images of Jupiter’s auroras during its polar fly-bys. These observations provide a great opportunity to study Jupiter’…

Progressive development of E-W extension across the Tibetan plateau: A case study of the Thakkhola graben, west-central…

The Thakkhola graben is a large-scale N-S striking, E-W structure located in west-central Nepal that was actively extending ca. 17 Myr ago. New multi-system geochronological data …

Cryptospecies and crust effects on the geochemistry of Globorotalia inflata

Sedimentary specimens of the planktonic foraminifera Globorotalia inflata can provide much needed information on subsurface conditions of past oceans. However, interpretation of i…

Earthquake-scaling in Stable Continental Regions: An Example From Fennoscandia

We develop an algorithm to measure densely-spaced vertical offsets along a scarp-like feature, and apply it to end-glacial fault-scarps (EGFs) in Fennoscandia, a stable-continenta…

Anthropogenic impacts on atmospheric carbonyl sulfide since the 19th century inferred from polar firn air and ice core …

Carbonyl sulfide (COS) was measured in firn air collected during seven different field campaigns carried out at four different sites in Greenland and Antarctica between 2001 and 2…

The Diet of Early Birds Based on Modern and Fossil Evidence and a New Framework for its Reconstruction

Birds are some of the most diverse organisms on Earth, with species inhabiting nearly every conceivable niche in every major biome. As such, birds are vital to our understanding o…

Background seismicity before and after the MS7.8 Tangshan earthquake in 1976: Is its aftershock sequence still continui…

The aftershock zone of the 1976 7.8 Tangshan earthquake, China, remains seismically active, experiencing moderate events such as the December 5, 2019,4.5 Fengnan event. It is stil…

Scattering Attenuation of Elastic Waves in Fractured Media

We present numerical simulations of elastic wave propagation, scattering and attenuation in two-dimensional fractured media. Natural fracture systems following a power law length …

Experimental Verification of Inverse Analysis of Turbidity Currents from Their Deposits by Machine Learning Technique

Despite the importance of turbidity currents in environmental and resource geology, their flow conditions and mechanism are not well understood. To resolve this issue, a new metho…

Flat subduction versus big mantle wedge: contrasting modes for deep hydration and overriding craton modification

Subduction-induced deep hydration and water cycling may play significant roles in the modification and destruction of the overriding cratonic lithosphere. Two contrasting modes ar…

Comprehensive Geophysical study at Wabar crater, Rub Al-Khali desert, Saudi Arabia

The study of impact craters on Earth has picked up high worldwide consideration, which can be done by studying the ground surface using remote sensing (satellite), geological outc…

Global Estimates of Lunar Surface Elemental Abundances Derived from LRO Diviner Data

Information on the elemental abundances and distribution is essential for understanding the petrological characteristics and geological evolution of the Moon. In this paper, the t…

Role of the Early Miocene Jinhe-Qinghe Thrust Belt in the building of the Southeastern Tibetan Plateau topography

Understanding the development of key thrust faults in southeastern Tibet is significant to reconstructing the geodynamic and topographic processes. Detailed structure analysis alo…

3D local earthquake tomography of the Ecuadorian margin in the source area of the 2016 Mw 7.8 Pedernales earthquake

Based on manually analyzed waveforms recorded by the permanent Ecuadorian network and our large aftershock deployment installed after the Pedernales earthquake, we derive three-di…

P/Ca in carbonates as a proxy for alkalinity and phosphate levels

Understanding mechanisms, rates, and drivers of carbonate formation provides insight into the chemical evolution of Earth’s oceans and atmosphere. We paired geological observation…

Improving seasonal drought predictions by conditioning on ENSO states

Significant hindcast skill for the 3-month standardized precipitation index (SPI$_{3M}$) has been so far limited to one lead month. To increase that lead time, we propose to explo…

Snowdrift Landscape Patterns: An Arctic Investigation

Between 2012 and 2018 we mapped near-peak seasonal snow depths across two swaths covering 126 km in Northern Alaska using aerial structure-from-motion photogrammetry and lidar sur…

Citizen Science as a Tool for Transdisciplinary Research and Stakeholder Engagement

This presentation describes a vector-borne disease risk reduction project conducted in Brazil and Peru as part of USAID’s Combating Zika and Future Threats Initiative. The myriad …

Projected Increases in Summertime Temperature Variance are Driven by Local Thermodynamics

The increasing frequency of very high temperatures driven by global warming has motivated growing interest in how the probability distribution of summertime temperatures will evol…

A tool to diagnose magnetosphere under northward IMF conditions: Simultaneous detections of TPA and omega-band aurora

In this study, we try to explore the feasibility on whether or not the magnetospheric processes under northward Interplanetary Magnetic Field (IMF) conditions can be diagnosed usi…

Hydrometeorological forcing of coastal dynamics in the Russian Arctic: link to erosion rates in the last decades

Coasts in the Russian Arctic are extremely vulnerable to the ongoing environmental changes. Temporal evolution of their retreat rates is driven by hydrometeorological processes. P…

Using an Emergency Medicine Mindset to Guide Climate Action: Lessons from the COVID

The 1,000-fold differences between countries in bringing the 2020 pandemic under control show the consequences of failures to stockpile, a century-old anti-science, anti-expertise…

Quantifying the effects of EMIC wave scattering and magnetopause shadowing in the outer electron radiation belt by mean…

In this study we investigate two distinct loss mechanisms responsible for the rapid dropouts of radiation belt electrons by assimilating data from Van Allen Probes A and B and Geo…

Temporal Intensity Interferometry

Working in experimental quantum optics with focus on instrumentation for temporal intensity interferometry. Have successfully measured and resolved the temporal photon bunching ef…

The role of the mean state on MJO simulation in CESM2 ensemble simulation

This study examines the role of the mean state in the propagation of the Madden-Julian Oscillation (MJO) over the Maritime Continent (MC). We use an ensemble of simulations made w…

About the collapse of a huge ice sheet lake on the Laurentide ice sheet.

A theory postulates that a huge ice lake named “Lake Agassiz” existed near the border between Canada and the United States during the last glacial age. It was thought that this la…

Prolonged Lifetime of the Transient Ionized Layer in the Martian Atmosphere Caused by Comet Siding Spring

In October 2014, the close encounter between Mars and comet Siding Spring produced a transient ionized layer in the upper atmosphere composed primarily of Mg⁺ ions. The layer was …

A Fourier-series modeling approach to develop corrections to atmospheric drag in orbit

Atmospheric drag is one of the primary sources of error in the orbit determination and prediction of satellites in the low altitude LEO regime. Accurate modeling of the drag force…

Searching for Technosignatures through Network Analysis

This is a network analysis approach to locate potential technosignatures in space. In the approach, nodes represent exoplanet host stars (host stars as a proxy for exoplanet locat…

OMPS LP Observations of PSC Variability During the NH 2019-2020 Season

Seasonal ozone depletion in the polar regions (during late winter and early spring) depends on the presence and distribution of polar stratospheric clouds (PSCs). In this paper, w…

Multi-solver spectral-element and adjoint methods

The spectral-element method (SEM) for simulating wave propagation is widely used with adjoint methods for full-waveform inversion. Typically, SEM is used to compute forward and ad…

Synchronization of Small Scale Seismic Clusters Reveal Large Scale Plate Deformation

It has long been observed that periods of intense seismic activity in a region alternate with periods of relative quiescence, but establishing whether this is the expected result …

Structure of Urban Landscape and Surface Temperature: a Case Study in Philadelphia, PA

Discerning the relationship between urban structure and function is crucial for sustainable city planning and requires examination of how components in urban systems are organized…

Decomposing Effective Radiative Forcing due to Aerosol Cloud Interactions by Global Cloud Regimes

Quantifying Effective Radiative Forcing due to aerosol-cloud interactions (ERF ACI ) remains a largely uncertain process, and the magnitude remains unconstrained in general circul…

CO2-plant effects do not account for the gap between dryness indices and projected dryness impacts in CMIP5 or CMIP6

Recent studies have found that terrestrial dryness indices like the Palmer Drought Severity Index, Standardized Precipitation Evapotranspiration Index, and Aridity Index calculate…

Climb of jogs as a rate-limiting process of screw dislocations motion in olivine dislocation creep

Dislocation recovery experiments were conducted on predeformed olivine single crystals at temperatures of 1,450 to 1,760 K, room pressure, and oxygen partial pressures near the Ni…

Geochemical, biological and clumped isotopologue evidence for substantial microbial methane production under carbon lim…

In high-pH ($\text{pH}>10$) fluids that have participated in low-temperature ($<150\,^{\circ}\text{C}$) serpentinization, the dominant form of C is often methane (CH$_{4}$), but t…

The dominant contribution of Southern Ocean heat uptake to time-evolving radiative feedback in CESM

Radiative feedbacks are found to vary with time in both historical records and future warming projections. Previous studies proposed two factors that determine the variation of ra…

A statistical study of the subauroral polarization stream over North American sector using the Millstone Hill incoheren…

This work conducts a statistical study of the subauroral polarization stream (SAPS) feature in the North American sector using Millstone Hill incoherent scatter radar measurements…

Intensity of the Earth’s magnetic field: evidence for a Mid-Paleozoic dipole low

The Mesozoic Dipole Low (MDL) is a period, covering at least ~80 million years, of low dipole moment that ended at the start of the Cretaceous Normal Superchron. Recent studies of…

Observed response of tropical river streamflow to climate change - evidence from a national database

We analyzed streamflow records from more than 300 stations across Thailand, a tropical country in Southeast Asia. Temporal changes in runoff yield were assessed over the 1960-2015…

Inverse Methods, Resolution and Implications for the Interpretation of Lithospheric Structure in Geophysical Inversions

Inverse methods form the basis of many investigations of the structure of the lithosphere-asthenosphere system as they provide the basis for physics-based subsurface imaging from …

A Flood Early Warning System Based on an Integrated Precipitation Forecasting with Global Datasets for Adapting Weather…

This research is part of the ongoing research project − Climate change Adaptation to ManagE the risks of extreme hydrologicaL and weather events for food security in vulnerable we…

2D Hydro-Mechanical-Chemical modelling of (de)hydration reactions in deforming heterogeneous rock: The periclase-brucit…

Deformation at tectonic plate boundaries involves coupling between rock deformation, fluid flow and metamorphic reactions, but quantifying this coupling is still elusive. We prese…

How to help

If you recognize any works that reference specific geographic locations, please login, confirm your account, and contribute metadata.

In case you find any errors in other metadata fields, if you see a work with incorrect location or time information, or if you find works that should be included in our database, please contact us:

Contact Us Back to Map