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Earth and Planetary Physics 2020年第1期4卷 1-3页

作者： Jun Cui zhaojin rong Yong Wei YuMing Wang School of Atmospheric Sciences Sun Yat-sen UniversityZhuhai Guangdong 519082China Key Laboratory of Lunar and Deep Space Exploration National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100012China Chinese Academy of Sciences Center for Excellence in Comparative Planetology Hefei 230000China Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China School of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China

The present issue of Earth and Planetary Physics is dedicated to the near-space neutral and plasma environments of *** issue includes nine papers that present new results on the properties of the Martian exosphere,ionosphere,and magnetosphere,from both observational and modeling points of *** to the similarity between the two objects,the issue also includes two additional papers on the near-Venus plasma environment.

关键词： Mars Venus exosphere ionosphere magnetosphere

Influence of upstream solar wind on magnetic field distribution in the Martian nightside ionosphere

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Earth and Planetary Physics 2024年第5期8卷 728-741页

作者： JiaWei Gao zhaojin rong Qi Zhang Anna Mittelholz Chi Zhang Yong Wei Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Swedish Institute of Space Physics Kiruna SE-98128Sweden Department of Earth Sciences ETH ZurichZurich 8092Switzerland Center for Space Physics and Department of Astronomy Boston UniversityBostonMA 02215USA

Using over eight years of Mars Atmosphere and Volatile Evolutio N(MAVEN)data,from November 2014 to May 2023,we have investigated the Martian nightside ionospheric magnetic field distribution under the influence of upstream solar wind drivers,including the interplanetary magnetic field intensity(∣BIMF∣),solar wind dynamic pressure(PS W),solar extreme ultraviolet flux(EUV),and Martian seasons(L s).Our analysis reveals pronounced correlations between magnetic field residuals and both∣BIMF∣and PS *** observed with EUV flux and Ls were weaker—notably,magnetic field residuals increased during periods of high EUV flux and at Mars *** find that the IMF penetrates to an altitude of 200 km under a wide range of upstream conditions,penetrating notably deeper under high∣BIMF∣*** analysis also indicates that EUV flux and IMF cone angle have minimal impact on IMF penetration *** findings provide useful constraints on the dynamic nature of Martian atmospheric escape processes and their evolution,suggesting that historical solar wind conditions may have facilitated deeper IMF penetration and higher rates of ionospheric escape than are observed ***,by establishing criteria for magnetic‘quiet’conditions,this study offers new insights into the planet’s magnetic environment under varying solar wind influences,knowledge that should help refine models of the Martian crustal magnetic field.

关键词： Martian magnetic field external magnetic field upstream solar wind drivers IMF penetration altitude magnetic field activity indices

Statistical survey on the magnetic field in magnetotail current sheets: Cluster observations

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Chinese Science Bulletin 2010年第23期55卷 2542-2547页

作者： rong zhaojin SHEN Chao LUCEK E BALOGH A YAO Li Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China State Key Laboratory of Space Weather Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100190 China College of Earth Science Graduate University of Chinese Academy of Sciences Beijing 100049 China Imperial College London SW7 2AZ United Kingdom

The distribution properties of the magnetic field in magnetotail current sheets have been explored statistically with the magnetic measurement data of the Cluster mission from June to November of the years 2001–*** is found that,on average,the strength of the magnetic field and its Bz component in the current sheet are weaker in the region close to midnight but stronger near the dawnside and duskside flanks,which implies that,in general,a thinner current sheet occurs near midnight and thicker ones near both *** occurrence of tail current sheet flapping is higher on both flanks than in the midnight region,although it is most frequent in the dawn *** sheets with a negative Bz component or a strong By component have a higher probability of occurring at magnetic local times of 21:00–01:00,indicating that magnetic activity,*** reconnection and current disruption occur more frequently ***,the probability distributions of the By component and the tilt angle of magnetic field lines in the current sheet are approximately normal distributions,and the occurrence probability of the flattened current sheet is about one third that of the normal current *** magnetic field and Bz component in the current sheet mainly vary from 1 nT to 10 *** By component in the tail central current sheet is on average twice the IMF By at 1 AU.

关键词：统计调查磁场分布电流片集群磁尾国际货币基金组织概率分布倾斜角度

Prospects for Jovian seismology with the Lenghu planetary telescope

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Earth and Planetary Physics 2024年第5期8卷 703-710页

作者： YiQing Zou Fei He ShanShan Zheng Lei Yu ZhongHua Yao zhaojin rong Yong Wei Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Anhui Institute of Optics and Fine Mechanics Chinese Academy of SciencesHefei 230031China

Jupiter is one of the top priorities for deep space exploration in China and other *** structure of Jupiter’s interior,in particular,is a crucial but still unclear scientific *** paper discusses current scientific understanding of Jupiter’s interior by summarizing the history of past and current exploration and data *** review recent space-based and ground-based observation methods and analyze their *** gain new insight into the internal structure of Jupiter,we propose to study Jupiter’s innards by planetary ***-based observation,namely the Jupiter Seismologic Interferometer Polarization Imager(SIPI)in Lenghu,will be developed to obtain the Doppler velocity distribution on the surface of Jupiter and identify oscillation *** has observation conditions that are not only exceptional in China but even in the world,capable of providing novel insight into the interior of *** will also be the first study in China of the interior of Jupiter using asteroseismology,which has significant implications for China’s plans to explore Jupiter via spacecraft-mounted instruments.

关键词： Jupiter seismology Jupiter’s interior Jupiter model Jupiter Seismologic Interferometer Polarization Imager(SIPI)

A local Martian crustal field model: Targeting the candidate landing site of the 2020 Chinese Mars Rover

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Earth and Planetary Physics 2020年第4期4卷 420-428页

作者： XinZhou Li zhaojin rong JiaWei Gao Yong Wei Zhen Shi Tao Yu WeiXing Wan Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth Science University of Chinese Academy of SciencesBeijing 100049China Beijing National Observatory of Space Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China China University of Geosciences Wuhan 430074China

Unlike Earth,Mars lacks a global dipolar magnetic field but is dominated by patches of a remnant crustal magnetic *** 2021,the Chinese Mars Rover will land on the surface of Mars and measure the surface magnetic field along a moving path within the possible landing region of 20°W-50°W,20°N-30°*** scientific target of the Rover is to monitor the variation in surface remnant magnetic fields and reveal the source of the ionospheric *** accurate local crustal field model is thus considered necessary as a field *** we establish a local crust field model for the candidate landing site based on the joint magnetic field data set from Mars Global Explorer(MGS)and Mars Atmosphere and Volatile Evolution(MAVEN)data *** model is composed of 1,296 dipoles,which are set on three layers but at different buried *** application of the dipole model to the joint data set allowed us to calculate the optimal parameters of their *** calculated results demonstrate that our model has less fitting error than two other state-of-the art global crustal field models,which would indicate a more reasonable assessment of the surface crustal field from our model.

关键词： Mars remnant crustal field crustal field model dipole sources Chinese Mars mission

A new inclination-based method to evaluate the global geomagnetic configuration and axial dipole moment

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Earth and Planetary Physics 2022年第4期6卷 359-365页

作者： KaiHua Xu Fei He Yong Wei Ross N.Mitchell Si Chen YuQi Wang zhaojin rong Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China School of Earth and Environment University of LeedsLeedsLS29JTUK

The strength and configuration of the geomagnetic field control the average shape of the *** pure dipole assumption and the virtual dipole moment(VDM),determined by individual records,have been widely adopted to evaluate the strength of the geomagnetic field in geological ***,such an assumption might not be valid during geomagnetic transitions,such as reversals and *** traditional spherical harmonic modeling of the geomagnetic field could be difficult to implement because accurate global records are ***,we report that an empirical relationship exists between the ratio of the VDM to the true axial dipole moment(VDM/ADM)and the ratio of the power of the axial dipole to that of the non-axial dipole(AD/NAD)based on a new method utilizing globally distributed inclination *** root mean square global deviation of inclination(RMSΔI)to the standard inclination distribution of the AD was fitted to the AD/NAD with a cubic polynomial by utilizing a large number of geodynamo *** with geomagnetic field models showed that the AD/NAD derived from the RMSΔI agreed well with that calculated by using the Gauss coefficients,and the estimated ADM was consistent with the true ***,the application of volcanic records during the Laschamp excursion showed the VDM might overestimate the ADM by a factor of *** new method will be useful in future studies that characterize the configuration of the geomagnetic field and the strength of the axial dipole.

关键词： axial dipole magnetic inclination virtual dipole moment

Magnetized magma intrusions being sources of a weak and a strong lunar magnetic anomaly revealed by 3D distribution of magnetization

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Earth and Planetary Physics 2024年第5期8卷 711-727页

作者： HongYi Wang Shuo Yao ZeLin Li LiangHui Guo Jing Yang ChangLi Yao Yuan Fang zhaojin rong School of Geophysics and Information Technology Research Center of Lunar and Planetary Remote Sensing ExplorationChina University of Geosciences(Beijing)Beijing 100083China Key Laboratory of Intraplate Volcanoes and Earthquakes(China University of Geosciences Beijing)Ministry of EducationBeijing 100083China Hebei University of Engineering Handan Hebei 056038China Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China

In this work,we aim to investigate the origin of the magnetic carriers in the lunar crust and the intensity of the ancient dynamo *** magnetization and depth range of magnetic carriers are studied under a weak and a strong magnetic anomaly in Mare Tranquillitatis and in Oceanus Procellarum,respectively,where the surface ages are 3.6 and 3.3 billion years.A sophisticated three-dimensional amplitude inversion software program from a geophysical survey is used to reconstruct the distributions of magnetization in the lunar *** no globally measured surface magnetic field exists for the Moon,a crustal magnetic anomaly model with a grid resolution of 0.2°is *** depth range of the magnetic source is fixed by the boundary identified by a relative criterion,which is 20%of the recovered maximum *** central burial depths of the magnetic carriers are approximately 15 km and 25 km under Reiner Gamma and Mare Tranquillitatis,*** volumes of the two magnetic sources are at scales of 104 and 105 km3,*** aforementioned differences may imply a hotter crust under Reiner Gamma than Mare Tranquillitatis by 3.3 billion *** results support the view that the magma intrusions magnetized by an ancient magnetic field could be the origin of magnetic anomalies under Reiner Gamma and Mare *** with previous works,the maximum magnetization of 3 A/m under Reiner Gamma supports the intensity of the field being several microteslas.

关键词： lunar magnetic anomaly 3D distribution of magnetization Reiner Gamma Mare Tranquillitatis

The response of Martian photoelectron boundary to the 2018 global dust storm

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Science China Earth Sciences 2024年第9期67卷 2772-2782页

作者： Yuqi WANG Jun CUI Yong WEI Zhaopeng WU Kai FAN zhaojin rong Fei HE Yutian CAO Jiawei GAO Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Planetary Environmental and Astrobiological Research Laboratory(PEARL) School of Atmospheric SciencesSun Yat-sen UniversityZhuhai 519082China Center for Excellence in Comparative Planetology Chinese Academy of SciencesHefei 230026China

Extensive research efforts have revealed that the Martian dust storms can perturb the upper atmospheric condition and as a consequence,enhance plasma density and photoelectron flux in the ***,previous observational studies of the Martian dust storm impacts have been restricted to regions below 400 km,which limits our understanding of the Martian dust storm effects in the upper ionosphere and ***,based on the suprathermal electron measurements made by the Solar Wind Electron Analyzer onboard the Mars Atmosphere and Volatile Evolution,we identify with an automatic procedure the occurrences of all photoelectron boundary(PEB)crossings at solar zenith angle below 120°(with a dust-free median altitude of about 600 km).Using the dayside PEB as a proxy of the upper ionospheric and magnetospheric condition,we analyze the variations of the PEB altitude during the 2018 global dust storm(GDS)of Mars Year 34(MY34)and compare them with the period in MY33 when there was no global dust *** conclude that the column dust optical depth(CDOD)emerges as one of the main driving factors for PEB altitude variations during the *** analysis implies that the GDS can affect the Martian upper atmosphere and ionosphere over considerable distances and extended time scales.

关键词： Martian global dust storm Martian photoelectron boundary Upper ionosphere

Progress of Planetary Science in China

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空间科学学报 2022年第4期42卷 754-771页

作者： HUI Hejiu rong zhaojin ZHANG Jinhai HU Sen LIN Honglei WEI Yong LIN Yangting State Key Laboratory for Mineral Deposits Research&Lunar and Planetary Science Institute School of Earth Sciences and EngineeringNanjing UniversityNanjing 210023 Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029

The national and international progress in deep space exploration has greatly promoted the development of planetary science in *** progress in different areas of planetary science has been achieved in *** this report,we summarize the research achievements obtained in China in the last three *** achievements include the research on geology,geochemistry,and space physics of the Moon,Mars,Mercury,Venus,giant planets,asteroids,and *** recent work on science objectives,mission payloads,and analytical capabilities that supports the lunar and deep space exploration program of China has also been introduced in this ***,we report the progress on developments of discipline and research team of planetary science in China.

关键词： Planetary science Progress Exploration Mission Solar system

Upstream proton cyclotron waves: occurrence and amplitude dependence on IMF cone angle at Mars——from MAVEN observations

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Earth and Planetary Physics 2020年第1期4卷 51-61页

作者： Di Liu ZhongHua Yao Yong Wei zhaojin rong LiCan Shan Stiepen Arnaud Espley Jared HanYing Wei WeiXing Wan Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Laboratoire de Physique Atmospherique et Planetaire STAR instituteUniversite de LiegeLiegeBelgium NASA Goddard Space Flight Center GreenbeltMarylandUSA Department of Earth Planetary and Space SciencesUniversity of CaliforniaLos AngelesCaliforniaUSA

Proton cyclotron waves(PCWs)can be generated by ion pickup of Martian exospheric particles in the solar *** solar wind ion pickup process is highly dependent on the“IMF cone angle”—the angle between the solar wind velocity and the interplanetary magnetic field(IMF),which also plays an important role in the generation of *** data from 2.15 Martian years of magnetic field measurements collected by the Mars Atmosphere and Volatile Evolution(MAVEN)mission,we have identified 3307 upstream PCW *** event number distribution decreases exponentially with their duration.A statistical investigation of the effects of IMF cone angle on the amplitudes and occurrence rates of PCWs reveals a slight tendency of PCWs’amplitudes to decrease with increasing IMF cone *** relationship between the amplitude and IMF cone angle is weak,with a correlation coefficient r=–*** also investigated the influence of IMF cone angle on the occurrence rate of PCWs and found that their occurrence rate is particularly high for intermediate IMF cone angles(~18°–42°)even though highly oblique IMF orientation occurs most frequently in the upstream region of the Martian bow *** also conclude that these variabilities are not artefacts of temporal coverage biases in MAVEN *** results demonstrate that whereas IMF cone angle strongly influences the occurrence of PCWs,IMF cone angle may also weakly modulate their amplitudes in the upstream region of Mars.

关键词： ion pickup proton cyclotron waves Martian exosphere