yusuke1997/dblp-id-title huggingface dataset:
High Phase-Preserving Autofocus Imaging for Squinted Airborne Synthetic Aperture Radar
Scale Model Experimental Validation and Calibration of the Half-Space Green's Function Born Approximation Model Applied to Cross-Well Radar Sensing
Waveform-Diversity-Based Millimeter-Wave UAV SAR Remote Sensing
Complementarity-Aware Local-Global Feature Fusion Network for Building Extraction in Remote Sensing Images
A Cross Comparison of Spatiotemporally Enhanced Springtime Phenological Measurements From Satellites and Ground in a Northern U.S. Mixed Forest
Hyperspectral Unmixing via Noise-Free Model
Tropical Mean Fluxes: A Tool for Calibration and Validation of CERES Radiometers
Retrieving Middle-Infrared Reflectance Using Physical and Empirical Approaches: Implications for Burned Area Monitoring
A Bayesian Procedure for Full-Resolution Quality Assessment of Pansharpened Products
Normalized Difference Latent Heat Index for Remote Sensing of Land Surface Energy Fluxes
Cross-Modality Contrastive Learning for Hyperspectral Image Classification
Eigenvalue-Based Approaches for Solving an Ill-Posed Problem Arising in Sensor Orientation
Coupled Dictionary Learning for Change Detection From Multisource Data
Facet Segmentation-Based Line Segment Extraction for Large-Scale Point Clouds
PointCluster: Deep Clustering of 3-D Point Clouds With Semantic Pseudo-Labeling
A Coupling Model for Soil Moisture Retrieval in Sparse Vegetation Covered Areas Based on Microwave and Optical Remote Sensing Data
The effect of steep sea-waves on polarization ratio at low grazing angles
SEABED Algorithm and Comments on "Modeling and Migration of 2-D Georadar Data: A Stationary Phase Approach"
Automatic Velocity Analysis Based on Unsupervised Physical Constraints Learning
A Method for Estimating the Direction of Arrival Without Knowing the Source Number Using Acoustic Vector Sensor Arrays
Multiscale Edge-Guided Network for Accurate Cultivated Land Parcel Boundary Extraction From Remote Sensing Images
Seismic Data Interpolation by Shannon Entropy-Based Shaping
Potential of Estimating Soil Moisture Under Vegetation Cover by Means of PolSAR
DBA-RMCL: Refined Metric Contrastive Learning With Dual-Branch Attention for Few-Shot Remote Sensing Image Scene Classification
Estimation of forest parameters through fuzzy classification of TM data
Nonnegative Tensor CP Decomposition of Hyperspectral Data
A New Doppler Model Incorporated With Free and Broken-Short Waves for Coherent S-Band Wave Radar at Near-Grazing Angles
Wide-Swath Ocean Altimetry Using Multisatellite Single-Pass Interferometry
Retrieving Profile Temperatures in a Frozen Topsoil Near the TFS, Alaska, Based on SMOS Brightness Temperatures at the 1.4-GHz Frequency
Confidence bounds of petrophysical predictions from conventional neural networks
CCANet: Class-Constraint Coarse-to-Fine Attentional Deep Network for Subdecimeter Aerial Image Semantic Segmentation
Dehaze-TGGAN: Transformer-Guide Generative Adversarial Networks With Spatial-Spectrum Attention for Unpaired Remote Sensing Dehazing
A Blind Full Resolution Assessment Method for Pansharpened Images Based on Multistream Collaborative Learning
Semantic Category Balance-Aware Involved Anti-Interference Network for Remote Sensing Semantic Segmentation
Introduction to the special issue on large scale passive microwave remote sensing of soil moisture
Mapping the Lunar Heat Flow: Methodology and New Constraints From Recalibrated Chang'E-2 Microwave Radiometer Data
High-Resolution SAR Interferometry: Estimation of Local Frequencies in the Context of Alpine Glaciers
Cross-Resolution Change Detection in Remote Sensing via Unequal Relationships From a Frequency Perspective
A Novel Two-Way Finite-Element Parabolic Equation Groundwave Propagation Tool: Tests With Canonical Structures and Calibration
UPVnet: A Neural Network for First-Arrival Picking in Ultrasonic Pulse Velocity Testing on Rock Samples
Selection of Optimal Building Facade Texture Images From UAV-Based Multiple Oblique Image Flows
Automatic detection of mass-resolved ion conics
G-Band Radar for Humidity and Cloud Remote Sensing
A Modified Three-Step Algorithm for TOPS and Sliding Spotlight SAR Data Processing
Multifrequency emission of wheat: Modeling and applications
Geographic True Navigation Based on Real-Time Measurements of Geomagnetic Fields
Microwave emission features of crops with vertical stems
Designing optimal spectral indexes for remote sensing applications
River Ice Fine-Grained Segmentation: A GF-2 Satellite Image Dataset and Deep Learning Benchmark
Leveraging Satellite Data With Machine and Deep Learning Techniques for Corn Yield and Price Forecasting
Poly-BRBLE: A Boundary Refinement-Based Individual Building Localization and Extraction Model Combined With Regularization
A Descalloping Postprocessor for ScanSAR Images of Ocean Scenes
Word-Sentence Framework for Remote Sensing Image Captioning
Model-Informed Multistage Unsupervised Network for Hyperspectral Image Super-Resolution
Spatial Attention-Based Convoluted Gazelle Neural Network (SACGNN): Advanced Clutter Removal Across Diverse Surfaces
Intelligent Detection of Sports Fields Based on Very High-Resolution Stereo Satellite Imagery
Lithological Unit Classification Based on Geological Knowledge-Guided Deep Learning Framework for Optical Stereo Mapping Satellite Imagery
A Few-Shot SAR Target Recognition Method by Unifying Local Classification With Feature Generation and Calibration
A pixel shape index coupled with spectral information for classification of high spatial resolution remotely sensed imagery
Crisscross-Global Vision Transformers Model for Very High Resolution Aerial Image Semantic Segmentation
Amery Ice Shelf Grounding Line Datapoints Automated Extraction From Airborne Ice-Penetrating Radar
Land-Contamination Compensation for QuikSCAT Near-Coastal Wind Retrieval
Multidate Divergence Matrices for the Analysis of SAR Image Time Series
Flood Mapping Based on Synthetic Aperture Radar: An Assessment of Established Approaches
3DInvNet: A Deep Learning-Based 3D Ground-Penetrating Radar Data Inversion
Cluster-space representation for hyperspectral data classification
A Study on Oil Palm Remote Sensing at L-Band With Dense Medium Microwave Backscattering Model
Spatiotemporal Optimization of GPR Full Waveform Inversion Based on Super-Resolution Technology
Comparison of the multilayer perceptron with neuro-fuzzy techniques in the estimation of cover class mixture in remotely sensed data
Dual Feature Aggregation Network for Hyperspectral Image Classification
Modeling Microwave Emission of Corn Crop Considering Leaf Shape and Orientation Under the Physical Optics Approximation
Erratum to "Global Upscaling of Gross Primary Productivity Using a Simple and Robust Modeling Scheme"
A Novel Sea Clutter Rejection Algorithm for Spaceborne Multichannel Radar Systems
Adaptive Peak Extracting Transform and Its Application in Sedimentary Cycle Division
Estimation of Effective Resolution for Daily MODIS Gridded Surface Reflectance Products
A Kirchhoff-Based Shape Reconstruction Algorithm for the Multimonostatic Configuration: The Realistic Case of Buried Pipes
A segmentation-based method to retrieve stem volume estimates from 3-D tree height models produced by laser scanners
Theoretical Evaluation of Several Possible Along-Track InSAR Modes of TerraSAR-X for Ocean Current Measurements
Weight Parameter Optimization by the Ho-Kashyap Algorithm in MRF Models for Supervised Image Classification
Modeling China's Sichuan-Yunnan's Ionosphere Based on Multichannel WOA-CNN-LSTM Algorithm
Brightness Temperature and Soil Moisture Validation at Different Scales During the SMOS Validation Campaign in the Rur and Erft Catchments, Germany
Frequency-Spatial Interaction Reinforcement Paradigm for Infrared Small Target Detection
A Novel Tropical Cyclone Center Positioning Method Using Himawari-8 Over Western North Pacific
Hybrid-Sparsity Constrained Dictionary Learning for Iterative Deblending of Extremely Noisy Simultaneous-Source Data
A State-Based Method to Simultaneously Reduce Cycle Slips and Noise in Coherent GNSS-R Phase Measurements From Open-Loop Tracking
UHD Aerial Photograph Categorization by Leveraging Deep Multiattribute Matrix Factorization
A Simple Model of the Bare Soil Microwave Emission at L-Band
Observed Relationship Between BRF Spectral-Continuum Variance and Macroscopic Roughness of Clay Sediments
An Optimized Choice of UCPML to Truncate Lattices With Rotated Staggered Grid Scheme for Ground Penetrating Radar Simulation
In-flight calibration of the NEAR magnetometer
Passive Polarimetric Microwave Signatures Observed Over Antarctica
Knowledge-based segmentation of Landsat images
DeconNet: End-to-End Decontaminated Network for Vision-Based Aerial Tracking
Spatiotemporal Fusion Network for Land Surface Temperature Based on a Conditional Variational Autoencoder
Boreal forest ecosystem characterization with SIR-C/XSAR
Latent Relationship Guided Stacked Sparse Autoencoder for Hyperspectral Imagery Classification
Evolution and evaluation of a trainable cloud classifier
A Cross-Angle Propagation Network for Built-Up Area Extraction by Fusing Spatial-Spectral-Angular Features From the ZY-3 Multiview Satellite Imagery: Dataset and Analysis of China's 41 Major Cities
Hybrid Swin Transformer-CNN Model for Pore-Crack Structure Identification
The Effect of Ground Truth on Performance Evaluation of Hyperspectral Image Classification
Advancing Satellite-Derived Precipitation Downscaling in Data-Sparse Area Through Deep Transfer Learning
Reducing Ionospheric Effects in InSAR Data Using Accurate Coregistration
Lagrangian Characteristics of Machine Learning-Based Drop Size Distributions in Convective Cells: A Case Study
Information Reconstruction-Based Polarimetric Covariance Matrix for PolSAR Ship Detection
Hypergraph BiFormer for Semantic Segmentation of High-Resolution Remote Sensing Images
Modeling of Low-Latitude Ionosphere Using GPS Data With SHF Model
Multisource Remote Sensing Data Classification With Graph Fusion Network
Random Subspace-Based k-Nearest Class Collaborative Representation for Hyperspectral Image Classification
SAR Image Reconstruction Method for Target Detection Using Self-Attention CNN-Based Deep Prior Learning
Modeling Top-of-Atmosphere Anisotropic Reflectance of Discrete Forests Over Sloped Surface
Machine Learning Boosts Robust Ocean Color Retrieval in Complex Atmosphere and Ocean Systems: Taking Coastal Forel-Ule Index Mapping as an Example
New applications of nonlinear chirp scaling in SAR data processing
Residual SAR focusing: an application to coherence improvement
Scheme for Characterizing Clutter Statistics in SAR Amplitude Images by Combining Two Parametric Models
Toward Faithful Scene-Adaptive Knowledge for Semantic Segmentation of Remote Sensing Images
Classification of Polarimetric SAR Images Based on Modeling Contextual Information and Using Texture Features
3-D Voxel-Based Reconstruction of Multiple Objects Buried in Layered Media by VBIM Hybridized With Unsupervised Machine Learning
Two-Click-Based Fast Small Object Annotation in Remote Sensing Images
Attribute-Based Double Constraint Denoising Network for Seismic Data
Scattering from dielectric random fractal surfaces via method of moments
Phase Offset Calculation for Airborne InSAR DEM Generation Without Corner Reflectors
Validation of Significant Wave Height From Improved Satellite Altimetry in the German Bight
Geodetic Imaging of Time-Dependent Three-Component Surface Deformation: Application to Tidal-Timescale Ice Flow of Rutford Ice Stream, West Antarctica
Local Detection of Moving Targets in SAR Image Based on NRS Hypotheses
Hierarchical Prototype Learning via Aggregation-Decomposition for Fine-Grained Geospatial Scene Graph Generation
A Semisupervised Siamese Network for Hyperspectral Image Classification
CAST: A Cascade Spectral-Aware Transformer for Hyperspectral Image Change Detection
StarNet: A Deep Learning Model for Enhancing Polarimetric Radar Quantitative Precipitation Estimation
Thread the Needle: Cues-Driven Multiassociation for Remote Sensing Cross-Modal Retrieval
A Lightweight Spatial-Spectral Deformable CNN for UAV Hyperspectral Image Classification
Application of machine-learning techniques toward the creation of a consistent and calibrated global chlorophyll concentration baseline dataset using remotely sensed ocean color data
Image Fusion Processing for IKONOS 1-m Color Imagery
Bounds on the Variance in the Pattern Matching Criteria
Joint Spatial and Spectral Low-Rank Regularization for Hyperspectral Image Denoising
Downscaling Photosynthetically Active Radiation Based on Two-Step Conversions With Consideration of Vegetation Forms
The emissivity of foam-covered water surface at L-band: theoretical modeling and experimental results from the FROG 2003 field experiment
GRSG-DAF: A Global Robust Structured Graph Approach With Difference-Aware Filtering for SAR Image Change Detection
Dimensionality Reduction of Hyperspectral Data via Spectral Feature Extraction
Introduction to the Special Section on Image Information Mining for Earth Observation Data
MSSFC-Net: Enhancing Building Interpretation With Multiscale Spatial-Spectral Feature Collaboration
Growth of the Greenland ice sheet: a performance assessment of altimeter retracking algorithms
On the Wet Tropospheric Correction for Altimetry in Coastal Regions
Intelligent Detection of Turbulence Dissipation Rates From Radar Wind Profiler by Machine Learning Algorithms
Ice Cloud Properties From Himawari-8/AHI Next-Generation Geostationary Satellite: Capability of the AHI to Monitor the DC Cloud Generation Process
A Feature-Boosted Convolutional Neural Network for Full-Waveform Inversion
High-Rate Underwater Acoustic Localization Based on the Decision Tree
Diffraction Separation and Least-Squares Imaging Based on Multiscale and Multidirectional Wavefield and Image Decomposition
Toward Physics-Informed Neural Networks for 3-D Multilayer Cloud Mask Reconstruction
Estimation of Elastic Wave Velocity From Logging-While-Drilling Measurement in Unconsolidated Formation of Accretionary Wedge in Nankai Trough
Elitist Chemical Reaction Optimization for Contour-Based Target Recognition in Aerial Images
Cross-Modality Image Matching Network With Modality-Invariant Feature Representation for Airborne-Ground Thermal Infrared and Visible Datasets
Principal-components-based display strategy for spectral imagery
Inversion of Aerosol Optical Depth: Incorporating Multimodel Approach
QPCR: Weakly Supervised Semantic Segmentation of Large-Scale Point Cloud via Gradual Query Points Component Reasoning
Beam-filling effect correction with subpixel cloud fraction using a neural network
Significant Wave Height and Bistatic Doppler Signals of Microwave Scattering From the Ocean Surface: With Emphasis on the Swell Factor
DecloudNet: Cross-Patch Consistency is a Nontrivial Problem for Thin Cloud Removal From Wide-Swath Multispectral Images
Statistics of the Stokes Parameters for the Signal Scattered by Layered Structures With an Arbitrary Number of Slightly Rough Interfaces
A Plug-and-Play Priors Framework for Hyperspectral Unmixing
Unsupervised 3-D Random Noise Attenuation Using Deep Skip Autoencoder
Gabor Feature-Based Collaborative Representation for Hyperspectral Imagery Classification
Texture statistics for classification of land use with multitemporal JERS-1 SAR single-look imagery
Estimating equivalent dipole polarizabilities for the inductive response of isolated conductive bodies
Assimilating VLF Transmitter Observations With an LETKF for Spatial Estimates of the ${D}$ -Region Ionosphere
SAGStree: A High-Performance and Highly Realistic 3-D Tree Componentization Method Based on 3DGS
The impact of viewing geometry on material discriminability in hyperspectral images
Enhanced Resolution Method for Electromagnetic Vortex Imaging Based on Electromagnetic Information Theory
Combination of Spectral Angle Cosine and Band Depth Can Reduce the Specular Reflection Effects in Leaf Biochemical Parameters Estimation From Multiangular Hyperspectral Data
Multimodal Ground-Based Remote Sensing Cloud Classification via Learning Heterogeneous Deep Features
An Image-Domain Signal Model for Azimuth Multichannel Reconstruction and Its Applications
The Transient Electromagnetic Characteristics of Multitarget Unexploded Ordnance (UXO)
Model-Based Super-Resolution for Sentinel-5P Data
Foreword to the Special Issue on the EOS Aura Mission
Asymmetric Mamba-CNN Collaborative Architecture for Large-Size Remote Sensing Image Semantic Segmentation
Absorption Attenuation Compensation Using an End-to-End Deep Neural Network
RSG-GAN: A GAN-Based Precipitation Nowcasting Model Integrating Radar QPE, GOES-16 SWD, and GNSS ZTDs
Building Layout Reconstruction With Transmissive and Reflective Signals
DAMA - Infrared Sea Modeling and Analysis Software
Polarimetric SAR Data in Land Cover Mapping in Boreal Zone
Gabor-Based Learnable Sparse Representation for Self-Supervised Denoising
Low-Rank Decomposition and Total Variation Regularization of Hyperspectral Video Sequences
Feature Selection for Classification of Hyperspectral Data by SVM
Empirical Estimation of Leaf Chlorophyll Density in Winter Wheat Canopies Using Sentinel-2 Spectral Resolution
Exploiting Structured Sparsity for Hyperspectral Anomaly Detection
Correcting Distortion of Polarimetric SAR Data Induced by Ionospheric Scintillation
Dynamic Retrievals From Spaceborne Doppler Radar Measurements: The CConDoR Approach
Self-Supervision Interactive Alignment for Remote Sensing Image-Audio Retrieval
SMOS: The Mission and the System
A Functional Model for Determining Maximum Detectable Deformation Gradients of InSAR Considering the Topography in Mountainous Areas
Extracting Micro-Doppler Radar Signatures From Rotating Targets Using Fourier-Bessel Transform and Time-Frequency Analysis
A New Operational Northern Hemisphere Snow Water Equivalent Retrieval Algorithm for FY-3F/MWRI-II Based on Pixel-Based Regression Coefficients
Assessing the Suitability of Video Imaging for Studying the Dynamics of Nearshore Sandbars in Tideless Beaches
A Dispersive Processing of Borehole Guided Wave Data Using Multitask Physics-Informed Deep Learning
Authors' Reply to Comments by Takuya Sakamoto, Shouhei Kidera, and Toru Sato on "Seabed Algorithm and Comments on 'Modeling and Migration of 2-D Georadar Data: A Stationary Phase Approach'"
Model-Based Analysis-Synthesis for Realistic Tree Reconstruction and Growth Simulation
MiM-ISTD: Mamba-in-Mamba for Efficient Infrared Small-Target Detection
Asymmetric Hash Code Learning for Remote Sensing Image Retrieval
Surface-Based Polarimetric C-Band Microwave Scatterometer Measurements of Snow During a Chinook Event
An Advanced Tropospheric Delay Model Based on Gaussian Mixed Long Short-Term Memory Network
Enhancing Retrievals of Air-Sea Heat Fluxes From AMSR2 Microwave Observations Based on Deep Learning
A Hurricane Tangential Wind Profile Estimation Method for C-Band Cross-Polarization SAR
A Degraded Reconstruction Enhancement-Based Method for Tiny Ship Detection in Remote Sensing Images With a New Large-Scale Dataset
Assessing the Spaceborne 183.31-GHz Radiometric Channel Geolocation Using High-Altitude Lakes, Ice Shelves, and SAR Imagery
DANI-NET: A Physics-Aware Deep Learning Framework for Change Detection Using Repeat-Pass InSAR
An Efficient Nonlinear Imaging Approach for Dielectric Objects Buried Under a Rough Surface
Morphological Transformation and Spatial-Logical Aggregation for Tree Species Classification Using Hyperspectral Imagery
Context-Self Contrastive Pretraining for Crop Type Semantic Segmentation
Improved SAR Interrupted-Sampling Repeater Jamming Countermeasure Based on Waveform Agility and Mismatched Filter Design
Fusion of Sparse Model Based on Randomly Erased Image for SAR Occluded Target Recognition
Automated lidar transmitter for multiparameter investigations within the Arctic atmosphere
Monitoring Surface Phenomena Created by an Underground Chemical Explosion Using Fully Polarimetric VideoSAR
Oceanic Rain Flagging Using Radar Backscatter and Noise Measurements From Oceansat-2 Scatterometer
Impact of Compressive Stress on Microwave Dielectric Properties of Feldspar Specimen
Improving Spatial Representation of Soil Moisture Through the Incorporation of Single-Channel Algorithm With Different Downscaling Approaches
Understanding Mountain-Wave Phases in ERS Tandem DInSAR Interferogram Using WRF Model Simulation
A Markov random field approach to spatio-temporal contextual image classification
A Decoupled Chirp Scaling Algorithm for High-Squint SAR Data Imaging
Self-Supervised Global-Local Contrastive Learning for Fine-Grained Change Detection in VHR Images
Ulit-BiDet: An Ultralightweight Object Detector for SAR Images Based on Binary Neural Networks
Time-Domain Elastic Full Waveform Inversion With Frequency Normalization
NetRAD: Monostatic and Bistatic Sea Clutter Texture and Doppler Spectra Characterization at S-Band
Spotting Virus From Satellites: Modeling the Circulation of West Nile Virus Through Graph Neural Networks
Sensitivity Analysis of Vegetation Reflectance to Biochemical and Biophysical Variables at Leaf, Canopy, and Regional Scales
View-Based Knowledge-Augmented Multimodal Semantic Understanding for Optical Remote Sensing Images
Thin Ice Detection in the Barents and Kara Seas Using AMSR2 High-Frequency Radiometer Data
Spectral-Spatial MLP-Like Network With Reciprocal Points Learning for Open-Set Hyperspectral Image Classification
Reply to Comments on "An Analysis of a Staked Dipole Probe on a Lossy Earth Plane Using the Finite Difference Time Domain Method"
MiKA-HAD: Minority-Augmented KAN-Based Hybrid Self-Supervised Framework for Hyperspectral Anomaly Detection
Auto-AD: Autonomous Hyperspectral Anomaly Detection Network Based on Fully Convolutional Autoencoder
The finite-element method with domain decomposition for electromagnetic bistatic scattering from the comprehensive model of a ship on and a target above a large-scale rough sea surface
Global Adaptive Second-Order Transformer for Remote Sensing Image Semantic Segmentation
Supervised Alignment Perception and Modality Difference Selection Enhanced SAR-Optical Fusion for Cloud Removal
Blind cross-spectral image registration using prefiltering and Fourier-based translation detection
Convolution-Embedded Vision Transformer With Elastic Positional Encoding for Pansharpening
Blind Hyperspectral Unmixing Based on Graph Total Variation Regularization
Extending the Usability of Radiometer Ocean Surface Wind Measurements to All-Weather Conditions for NOAA Operations: Application to AMSR2
DCMWAF-Net: Dual Cross-Modal Weighted Attention Feature Fusion Network for Multiscale Lunar Crater Detection
UnDIP: Hyperspectral Unmixing Using Deep Image Prior
Unifying Experiment Design and Convex Regularization Techniques for Enhanced Imaging With Uncertain Remote Sensing Data - Part II: Adaptive Implementation and Performance Issues
TPOV-Seg: Textually Enhanced Prompt Tuning of Vision-Language Models for Open-Vocabulary Remote Sensing Semantic Segmentation
Phasor Quaternion Neural Networks for Singular Point Compensation in Polarimetric-Interferometric Synthetic Aperture Radar
Monitoring of seasonal thawing in Siberia with ERS scatterometer data
Angular Normalization of Land Surface Temperature and Emissivity Using Multiangular Middle and Thermal Infrared Data
Transferable Adversarial Attacks for Remote Sensing Object Recognition via Spatial- Frequency Co-Transformation
Time-Delay Estimation of Microseismic DAS Data Using Band-Limited Phase-Only Correlation
Mask-Enhanced Contrastive Learning for Hyperspectral Image Classification
Smooth Deep Learning Magnetotelluric Inversion Based on Physics-Informed Swin Transformer and Multiwindow Savitzky-Golay Filter
Retrieval of Surface Albedo on a Daily Basis: Application to MODIS Data
Spatiotemporal Image Fusion With Spectrally Preserved Pre-Prediction: Tackling Complex Land-Cover Changes
Abnormal Dynamic Recognition of Space Targets From ISAR Image Sequences With SSAE-LSTM Network
Validity of the Kirchhoff approximation for electromagnetic wave scattering from fractal surfaces
Reservoir Prediction Based on Closed-Loop CNN and Virtual Well-Logging Labels
Installation of a Doppler Radar Monitoring System at Merapi Volcano, Indonesia