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A theoretical framework for the rational approximation of optical response functions in resonant photonic systems is introduced. The framework is based on the AAA algorithm and further allows to solve the underlying nonlinear eigenproblems and to efficiently model sensitivities. An adaptive sampling strategy exploits the predominance of resonances in the physical response. A chiral metasurface is investigated and it is shown that the chiroptical response on parameter variations can be accurately modeled in the vicinity of the relevant resonance frequencies. [ABSTRACT FROM AUTHOR]

The triboelectric nanogenerator (TENG) is a new type of energy conversion technology capable of transforming various forms of environmental energy into electricity. However, most of the existing spring‐assisted TENGs (S‐TENGs) are based on the vertical contact‐separation mode, which has low energy‐harvesting efficiency and insufficient research on the performance output of TENG under near‐resonant frequency conditions. In this article, a low‐cost S‐TENG with independent layer mode is designed for vibration energy harvesting. The effects of different vibration parameters and structural parameters on the output performance are comprehensively investigated. In the experimental results, it is shown that the output voltage of the S‐TENG reaches its peak at a frequency of 50 Hz, achieving ≈40 V. To validate the capability of S‐TENG in powering low‐power devices, 20 LED lights are successfully lit. It is found that the maximum output power across the external resistor of 8 MΩ is 0.4 mw. It is also investigated that the output characteristics of S‐TENG under resonance and the results showed that higher output electric power can be achieved when the vibration frequency is close to the intrinsic frequency of the S‐TENG. In this finding, the potential of S‐TENG in optimized energy‐harvesting applications, particularly in resonance‐enhanced scenarios. [ABSTRACT FROM AUTHOR]

The main subject of this study is the low‐frequency (with the periods longer than 2 hr) wave processes in the coupled regional system of the Ross Ice Shelf (RIS), the Ross Sea and the atmosphere above them. We investigate possible causal relationships between the wave activity in the three media using a unique set of geophysical instruments: a hydrophone measuring pressure variations on the seafloor, a network of seismometers measuring vertical displacements of the RIS surface, and a Dynasonde system measuring wave characteristics at the ionospheric altitudes. We present an extension of the previously introduced theoretical model of the coupled resonance vibrations of the RIS that quantifies the connection between the ocean tide and the resonance vibrations of the RIS. The ocean tide is confirmed as the most significant source of excitation of the resonances. Analysis of average power spectra in year‐long data sets reveals multiple harmonics of the tide (eight) detected by the RIS seismometers while only three are detected by the seafloor sensor. This may represent a confirmation of the effect of resonance‐related broadband amplification predicted by the model. Several peaks in the spectrum of RIS vibrations have periods different from the periods of nearby tidal constituents and may be associated with broad‐scale resonance RIS vibrations. Resonances may play a role in maintaining the coupled atmosphere‐ocean wave activity. Our results reveal a statistically significant correlation between the spectra of the vertical displacements of the RIS and the spectra of the atmospheric waves. Plain Language Summary: This study explores how low‐frequency waves interact in the Ross Ice Shelf, the Ross Sea, and the atmosphere above them. By using a unique set of tools like hydrophones, seismometers, and a Dynasonde system, the researchers investigate the connection between waves in these three areas. They expand on a previous theoretical model, confirming that ocean tides are the main source of these interactions. The study finds that the ice shelf picks up more tidal harmonics than the seafloor sensor, which might support the idea of resonance‐related amplification. Additionally, some vibrations in the ice shelf have different periods than nearby tidal movements, which could be due to broad‐scale resonance vibrations. These resonances might play a role in maintaining the overall wave activity in the atmosphere and ocean. The research shows a significant correlation between the ice shelf's vertical movements and the atmospheric waves. Key Points: Ocean tides represent a major source of energy for exciting resonance vibrations of the Ross Ice Shelf (RIS)There is an empirical evidence for resonance‐related amplification effect predicted by the theory of forced ice shelf vibrationsSpectral correlation results confirm existence of the wave coupling above the noise level between atmosphere, ocean and the RIS [ABSTRACT FROM AUTHOR]

Light management is one of the main challenges to address when designing a sensor from a nanocrystal (NC) array. Indeed, the carrier diffusion length, limited by hopping mechanism, is much shorter than the absorption depth. Several types of resonators (plasmon, Bragg mirror, guided mode, Fabry-Perot cavity) have been proposed to reduce the volume where light is absorbed. All of them are inherently narrow bands, while imaging applications focus on broadband sensing. Here, an infrared sensor in the short and mid-wave infrared (SWIR and MWIR) that combines three different photonic modes is proposed to achieve broadband enhancement of the light absorption. Moreover, it is shown that these three modes can be obtained from a simple structure where the NC film is coupled only to a grating and a top metallic layer. The obtained device achieves a high responsivity of >700 mA W-1, a detectivity up to 2 × 1010 Jones at 80 K, and a short response time of 11 µs. [ABSTRACT FROM AUTHOR]

Thiophenol‐based molecules are commonly used reporter molecules for various experiments, especially within the scope of surface‐ and tip‐enhanced Raman spectroscopy. Due to their molecular structure, they bind covalently to noble metals and have a huge Raman scattering cross section. Herein, the widely uncharted optical properties of the frequently used probe molecule 4‐nitrothiophenol (p‐NTP or 4‐NTP) are analyzed by resonant Raman spectroscopy. Based on the three different types of samples, it is demonstrated that the molecule exhibits two intrinsic resonances at specific wavelengths. For a wide range of experiments, this is an important information since intrinsic resonances may give rise to an enhancement of the Raman intensity at these specific excitation wavelengths. The Raman cross section of p‐NTP in resonance at 1.9 eV (650 nm) to be 6 × 10−26 cm2 per molecule is also measured. [ABSTRACT FROM AUTHOR]

In the absence of clear sex differences in vocal anatomy, the expression of gender in pre‐pubertal children's voices has a strong behavioural dimension. However, whether children are sensitive to this gender‐related variation in the voice and use it to make inferences about their peers' masculinity and femininity remains unexplored. Using a cross‐modal matching task, thirty‐one 7‐ to 8‐year‐olds and forty‐two adults were asked to associate prototypical voices of boys and girls, and their re‐synthesized masculinized and feminized versions, to fictional stereotypically masculine, gender‐neutral, and stereotypically feminine child characters. We found that listeners spontaneously associated stereotypically masculine and feminine descriptors of a child character with masculinized voices and feminized voices, respectively. Adults made overall more stereotypical associations and were less influenced by character sex than children. Our observations highlight for the first time the contribution of acoustic cues to gender stereotyping from childhood, and its potential implications for the gender schema literature. Statement of contributionWhat is already known on this subject?Research on stereotyping shows children's schematic processing of the visible aspects of gender expressionPsychoacoustic research shows that variation in children's voices affects adults' judgments of their masculinityWhat does this study add?Children and adults linked voice variation to gender‐stereotypical characterizations of child charactersAdults made overall more stereotypical associations than children and were less influenced by character's sexOur results highlight the existence of a vocal component in children's and adults' gender schemas [ABSTRACT FROM AUTHOR]

We deal with the stationary acoustic waves propagating in a cluster of small particles enjoying high contrasts. Such contrasts allow the appearance of (complex valued) resonances that are close to the real line as the size of the particles becomes small. For single (but not necessarily small) particles, we derive the characteristic equation that generates a class of these resonances (the ones for which the corresponding eigenfunctions are uniformly constant). For multiple and small particles, we provide sufficient conditions on the contrasts that generates quasi‐resonances for which the corresponding eigenfunctions are uniformly constant. Precisely, we show that, if we distribute the particles on a uniform line, then the existence of such quasi‐resonances is related to the eigenvalues of the Harary matrix. To show these results, we take, as the small contrasted particles, small obstacles with high surface impedances λ of the form λ: = βa−1 − αβa−1 + h where a is the maximum radi of the particles, with a < <1, and β is a universal and positive constant depending only on the shape of the particles (but not on their size). In this case, if the relative constant α is an eigenvalue of the Harary matrix, then the used frequency is a quasi resonance of the cluster of the small particles where the error of approximation is of the order max(ah,a1−h) for h ∈ (0,1) as a < <1. [ABSTRACT FROM AUTHOR]

This study presents a methodology to consider the impedance of a grid in power‐hardware‐in‐the‐loop experiments to validate power converter control in the presence of harmonics or resonances in the network impedance. As the phenomena to emulate are in a large frequency range, the skin effect in conductors has to be taken into account. A procedure is developed to model the network. Then, the model is simplified to reduce the computation requirements and discretised for real‐time implementation. The proposed method has been applied to analyse the harmonic interactions due to on‐board converters running on a 25 kV–50 Hz railway infrastructure for frequencies from 0 to 5 kHz. The model is computed in MATLAB–Simulink, a SpeedGoat Performance Machine and a linear power supply are used for a real‐time implementation. The converter under test and the test bench are presented. Some experimental results are presented, showing the feasibility and the usefulness of the proposed approach. [ABSTRACT FROM AUTHOR]

Abstract: High index dielectric nanoparticles and metasurfaces have been proposed for many different applications, including light harvesting, sensing, and metalenses. However, widespread utilization in practice also requires large‐scale fabrication methods able to produce homogeneous structures with engineered optical properties in a cost effective manner. Here, a facile fabrication method for silicon nanoparticles is presented that is scalable to 4 inch wafers and can produce a wide range of nanoparticle shapes on demand. Furthermore, it is shown that the fabricated nanoparticles can be detached from their support using a simple substrate removal technique and then transferred to colloidal suspension. The method is universal in the sense that it can be used to generate monodispersed colloidal solutions of nanoparticles of various shapes, sizes and compositions and it therefore opens up a range of new possibilities for applications, for example in nanomedicine and bionanotechnology. [ABSTRACT FROM AUTHOR]

We discuss bound and anti-bound states for 2×2 matrix Schrödinger operator. We analyze the Fredholm determinant for Hamiltonians that can be represented in a multi-channel framework. Our analysis covers the whole and the half-line problems. We obtain some results on counting anti-bound states between successive bound states. Copyright © 2017 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

A comparative analysis of three different time-independent approaches to studying open quantum structures in a uniform electric field [ABSTRACT FROM AUTHOR]

We present a theoretical study of Feshbach resonances in HCO, using an extension of a previous projection theory [Y. Wang and J. M. Bowman, J. Chem. Phys. 139, 154303 (2013)] that makes use of projections of the normal modes of HCO onto a one-dimensional rectilinear path along the imaginary-frequency normal mode of the dissociation saddle point. HCO dissociation is strongly mode specific, because the CH-stretch is nearly coincident with this path. The projection theory predicts that HCO dissociates with a subpicosecond lifetime for the CH-stretch excited to the second overtone ( [ABSTRACT FROM AUTHOR]

The experimental electron affinity (EA) of CO( X1Σ+) is −1.5 eV, signifying the metastability of the CO−( X2Π) anion. The electronic structure and bonding of CO−, BF−, and BCl− vis-à-vis their neutral counterparts have been studied by conventional coupled-cluster (CCSD(T)) and multireference (MRCI) methods. Our results are in agreement with experiment for the CO/CO− system, indicating as well the metastable nature of the BF−( X2Π) and BCl−( X2Π) anions, their MRCI EAs being −0.8 ± 0.1 and −0.3 ± 0.1 eV, respectively. Our work clearly shows the usefulness of stationary state ab initio methods to the elucidation of metastable species. © 2015 Wiley Periodicals, Inc. [ABSTRACT FROM AUTHOR]

ABSTRACT In this article, a dual-band narrow bandpass filter using U-shaped stepped-impedance resonator (SIR) for 2.4/5.2 GHz wireless local area network (WLAN) application is proposed. The filter is composed of a simple U-shaped SIR and novel feedlines with two open stubs. Furthermore, this article relatively used the first and second resonances to achieve the dual-band performance. To validate the design and analysis, a prototype filter has been fabricated with two passbands are centered at 2.4 and 5.2 GHz with the fractional bandwidth of 4.9 and 3.5%, respectively. Its excellent selectivity is suitable for WLAN application. The measurement performances show good agreements with the simulated ones. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1143-1146, 2015 [ABSTRACT FROM AUTHOR]

Resonant tunneling of electrons through a multiple potential barrier in a semiconductor heterostructure in the presence of both an oscillating in time and constant external electric fields is considered. In order to solve the problem numerically the concept of the scattering matrix is developed and a stable numerical algorithm is presented. Using this algorithm computations for different amplitudes and different spatial configurations of the fields are performed. [ABSTRACT FROM AUTHOR]

We present a complex multiconfigurational self-consistent field (CMCSCF)-based approach to investigate electron-atom scattering resonances. It is made possible by the use of second quantization algebra adapted for biorthogonal spin orbitals, which has been applied to develop a quadratically convergent CMCSCF method. To control the convergence to the correct CMCSCF stationary point, a modified step-length control algorithm is introduced. Convergence to a tolerance of 1.0 × 10-10 a.u. for the energy gradient is found to be typically within 10 iterations or less. A method involving the first block of the M matrix defined in the multiconfigurational spin tensor electron propagator method (MCSTEP) based on the CMCSCF reference state has been implemented to investigate 2P Be- shape resonances. The position and width of these resonances have been calculated for different complete active space choices. The wide distribution of the position and width of the resonance reported in the literature is explained by the existence of two distinct resonances which are close in energy. © 2009 Wiley Periodicals, Inc. Int J Quantum Chem, 2010 [ABSTRACT FROM AUTHOR]

In this contribution we will revisit the celebrated theorem that every square matrix is similar to a (complex) symmetric matrix and that every symmetric matrix is orthogonally similar to a given normal canonical form. Specifically we will re-examine the proof as well as the derivation of an explicit n-dimensional complex symmetric form. We will extend the formula to incorporate the various powers of the original normal form, a derivation not previously provided. Some examples of these complex symmetric forms in chemical and physical applications are indicated. © 2009 Wiley Periodicals, Inc. Int J Quantum Chem, 2009 [ABSTRACT FROM AUTHOR]

It is shown that the Volterra integral equation in combination with complex scaling gives a formalism capable to solve Schrödinger-type problems concerning bound states and resonances. The regular solution of the Schrödinger equation presented at the Volterra integral equation allows us to define the explicit form of the Jost function analytically continued into the lower half complex momentum plane. The resulting formalism is used to develop a numerical method for finding resonances defined as zeros of the Jost function. The numerical method is tested on several analytical potentials; it gives good results for arbitrary orbital momentum l. © 2006 Wiley Periodicals, Inc. Int J Quantum Chem, 2007 [ABSTRACT FROM AUTHOR]

Recently the need for incorporating so-called Jordan blocks in the theoretical formulation of dynamical processes in Nature has been confronted and challenged. In addition, quantum mechanics has evolved from the very theoretical to the highly technological prompting the establishment of the new field of quantum technology. Initial studies in an extended time-irreversible picture seem to indicate a possible map of degenerate Jordan forms onto the description of complex natural phenomena. Jordan blocks appear logically in the generalized dynamical picture. A compelling interpretation is microscopic self-organization (MSO). Not only have the manifestation of quantum thermal correlations, and the emergence of generic time scales been established, but the present viewpoint also appears to throw new light on the age-old problem of quantum mechanics versus relativity. A simple resonance model is presented that bears out the problems and possibilities. © 2006 Wiley Periodicals, Inc. Int J Quantum Chem, 2006 [ABSTRACT FROM AUTHOR]

A new closed form material invariant analysis on resonances of microwave induced power absorption is presented. It is shown that resonances in average power is confined within two asymptotic limits of thin and thick samples, and the resonances occur if λm ≤ 1.5Dp.m for λm ≈ λ0 and λm ≤ 3Dp.m for λm ≉ λ0. Here λm and Dp.m denote the wavelength and penetration depth within the sample, respectively, and λ0 is the wavelength within the free space. It has been shown that average absorbed power does not exhibit resonance for one side incidence if λm ≈ λ0, while the occurrence of resonance is independent of φl for λm ≉ λ0. Here, φl is the fractional power input from the left side. The amplitudes of subsequent resonating peaks are also shown to decay monotonically with sample length for λm ≈ λ0, while they vary nonmonotonically for λ ≉ λ0 and φl ≉ 0, 1 or ½ due to suppressions of odd (for λm < λ0), or even (for λm > λ0) resonating peaks, which increase as φl approaches ½ from either 0 or 1. Finally, at φl ≈ ½ with λm ≉ λ0 odd (for λm < λ0), or even (for λm > λ0) resonating peaks of average absorbed power vanish reducing the number of resonating points by a factor of two from one side incidence (φl ≈ 0 or 1), to both side incidence with equal power input from left and right sides (φl ≈ ½). This work provides correlations (corresponding to λm ≈ λ0 and λm ≉ λ0) for predicting the locations of resonating peaks as function of λm/λ0, λm/Dp.m, and φl. The theoretical prediction on average power characteristics have been shown to be useful in forecasting the heating patterns for efficient material processing. [ABSTRACT FROM AUTHOR]

The algebraic structure for creation and annihilation operators defined on orthogonal orbitals is generalized to permit easy development of bound-state techniques involving the use of non-Hermitian Hamiltonians arising from the use of complex-scaling or complex-absorbing potentials in the treatment of electron scattering resonances. These extensions are made possible by an orthogonal transformation of complex biorthogonal orbitals and states as opposed to the customary unitary transformation of real orthogonal orbitals and states and preserve all other formal and numerical simplicities of existing bound-state methods. The ease of application is demonstrated by deriving the modified equations for implementation of a quadratically convergent multiconfigurational self-consistent field (MCSCF) method for complex-scaled Hamiltonians but the generalizations are equally applicable for the extension of other techniques such as single and multireference coupled cluster (CC) and many-body perturbation theory (MBPT) methods for their use in the treatment of resonances. This extends the domain of applicability of MCSCF, CC, MBPT, and methods based on MCSCF states to an accurate treatment of resonances while still using L2 real basis sets. Modification of all other bound-state methods and codes should be similarly straightforward. © 2005 Wiley Periodicals, Inc. Int J Quantum Chem, 2005 [ABSTRACT FROM AUTHOR]

A live halo plays an active role in the formation and evolution of bars by participating in the angular momentum redistribution that drives the dynamical evolution. Angular momentum is emitted mainly by near-resonant material in the bar region and is absorbed mainly by near-resonant material in the halo and in the outer disc. This exchange determines the strength of the bar, the decrease in its pattern speed, as well as its morphology. Thus, contrary to previous beliefs, a halo can help the bar grow, so that bars growing in galaxies with responsive massive haloes can become stronger than bars growing in disc dominated galaxies. During the evolution the halo does not stay axisymmetric. It forms a bar that is shorter and fatter than the disc bar and stays so throughout the simulation, although its length grows considerably with time. I discuss the orbital structure in the disc and the halo and compare it with periodic orbits in analytical barred galaxy potentials. A central mass concentration (e.g., a central black hole or a central disc) weakens a bar and increases its pattern speed. The effect of the central mass concentration depends strongly on the model, being less strong in models with a massive concentrated halo and a strong bar. [ABSTRACT FROM AUTHOR]

A detailed analysis on enhanced heating effects attributed to resonance of microwaves has been carried out to study the efficient heating methodologies for oil-water emulsions. Studies on heating have been carried out for samples incident with microwaves at one side and at both sides. The maxima in average power corresponding to resonances occur at various sample thicknesses for all emulsions and we consider two dominant resonance modes R1 and R2, where the average power at R1 is larger than that at R2. During one side incidence, it is observed that processing rates are greater at the R2 mode for both oil-in-water (o/w) and water-in-oil (w/o) emulsions, whereas for both-sides incidence, the R1 mode is favored for o/w emulsion and the R2 mode is advantageous for w/o emulsion. The greater rates in thermal processing are observed when the emulsions (o/w and w/o) are incident at both sides. Current analysis recommends on the efficient way to use microwaves in a customized plane-wave oven for greater heating effects and determines the optimal sample thicknesses vs. various oil-water contents for thermal processing. The emulsion system is a combination of materials with very low dielectric loss (oil) and high dielectric loss (water), and the effective dielectric response is highly nontrivial to predict the efficient way to heat an emulsion, either o/w or w/o. [ABSTRACT FROM AUTHOR]

In this paper, we show that a complete three-layer analysis is necessary to characterise the cladding modes in order to obtain grating period, resonances, and coupling length in the design of long-period gratings (LPGs), and that the simplified two-layer fiber geometry used by many authors leads to incorrect designs. This is illustrated by design calculations corresponding to actual applications of long-period gratings as sensors and gain equalisation filters for EDFA. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 37: 45–49, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10820 [ABSTRACT FROM AUTHOR]

In the last few years, the hybrid moment-method/finite-element-method (MM/FEM) approach has been widely used to solve electromagnetic scattering problems. However, as is well known, this method fails at the resonance frequencies of a cavity that is obtained by covering the surface of a scatterer with a perfect electric conductor and filling it the external medium, and at the resonance frequencies of a cavity that is obtained by covering the surface of a scatterer with a perfect magnetic conductor, and filling it with the scatterer itself. Numerical simulations showing how these different resonances affect MM/FEM solutions are presented and discussed. [ABSTRACT FROM AUTHOR]

In this work, we study the problem in calculation of Stark resonances by using complex absorbing potentials (CAPs), and its solutions. The motivation of using CAPs for calculating Stark resonances stems from the fact that CAPs can be easily inserted to a large variety of available codes for calculating the electronic structure of molecules and atoms. Our conclusion is that the appropriate CAPs for studying ac/dc Stark resonances are those that are associated with smooth‐exterior‐scaling (SES) transformations, which rotate the spatial contour of integration into the complex plane. The performance of SES‐CAPs vs standard commonly used CAPs in different types of basis sets is investigated. [ABSTRACT FROM AUTHOR]

The Shannon‐like entropic measure of spatially localized functions for a 5D braneworld generated by a double sine‐Gordon (DSG) potential is evaluated. The differential configurational entropy (DCE) has been shown in several recent works to be a configurational informational measure (CIM) that selects critical points and brings out phase transitions in confined energy models with arbitrary parameters. The DSG scenario is selected because it presents an energy‐degenerate spatially localized profile where the solutions to the scalar field demonstrate critical behavior that is only a result of geometrical effects. As is shown, the DCE evaluation provides a method for predicting the existence of a transition between the phases of the domain wall solutions. Moreover, the entropic measure reveals information about the model that is capable of describing the phase sector where resonance modes on the massive spectra of the graviton is obtained. The graviton resonance lifetimes are related to the existence of scales on which 4D gravity is recovered. Thus, the critical points defined by the CIMs with the existence of resonances and their lifetimes are correlated. To extend the research regarding this system, the corrections to Newton's law coming from the graviton modes are calculated. [ABSTRACT FROM AUTHOR]

Lithium niobate is a multi‐functional material, which has been regarded as one of the most promising platforms for the multipurpose optical components and photonic circuits. Targeting miniature optical components and systems, lithium niobate microstructures with feature sizes of several to hundreds of micrometers are demonstrated, such as waveguides, photonic crystals, micro cavities, and modulators, and so on. In order to demonstrate the possibilities toward further shrinking the footprint of the lithium niobate devices with new optical functionalities, here, subwavelength nanograting metasurfaces are fabricated based on a crystalline lithium niobate film. Due to the collective lattice interactions between isolated ridge resonances, distinct transmission spectral resonances are observed, which could be tunable by varying the structural parameters. Furthermore, the metasurfaces are capable of showing high‐efficiency transmission structural colors as a result of structural resonances and intrinsic high transparency of lithium niobate in visible spectral range. The results pave the way for new types of ultracompact photonic devices based on lithium niobate. [ABSTRACT FROM AUTHOR]

Continuous seismic observations across the Ross Ice Shelf reveal ubiquitous ambient resonances at frequencies >5 Hz. These firn‐trapped surface wave signals arise through wind and snow bedform interactions coupled with very low velocity structures. Progressive and long‐term spectral changes are associated with surface snow redistribution by wind and with a January 2016 regional melt event. Modeling demonstrates high spectral sensitivity to near‐surface (top several meters) elastic parameters. We propose that spectral peak changes arise from surface snow redistribution in wind events and to velocity drops reflecting snow lattice weakening near 0°C for the melt event. Percolation‐related refrozen layers and layer thinning may also contribute to long‐term spectral changes after the melt event. Single‐station observations are inverted for elastic structure for multiple stations across the ice shelf. High‐frequency ambient noise seismology presents opportunities for continuous assessment of near‐surface ice shelf or other firn environments. Plain Language Summary: Ice shelves are the floating buttresses of large glaciers that extend over the oceans and play a key role in restraining inland glaciers as they flow to the sea. Deploying sensitive seismographs across Earth's largest ice shelf (the Ross Ice Shelf) for 2 years, we discovered that the shelf nearly continuously sings at frequencies of five or more cycles per second, excited by local and regional winds blowing across its snow dune‐like topography. We find that the frequencies and other features of this singing change, both as storms alter the snow dunes and during a (January 2016) warming event that resulted in melting in the ice shelf's near surface. These observations demonstrate that seismological monitoring can be used to continually monitor the near‐surface conditions of an ice shelf and other icy bodies to depths of several meters. Key Points: High‐frequency (>5 Hz), narrow‐band signals observed on an ice shelf are sensitive to changes in the near‐surface firn layerSpectral peak frequency changes coincide with melt/freeze events on the ice shelf as well as with storm‐driven redistribution snowMelt events have a unique spectral signature and can be modeled in terms of the penetration depth to which these thermal anomalies diffuse [ABSTRACT FROM AUTHOR]