Geophysical Research Letters最新文献_第8页

A Critical Core Size for Dynamo Action at the Galilean Satellites 伽利略卫星动力作用的临界核心尺寸

IF 4.6 1区地球科学

Geophysical Research Letters Pub Date : 2024-11-18 DOI: 10.1029/2024GL110680

K. T. Trinh, C. J. Bierson, J. G. O’Rourke

引用次数: 0

Seasonal Upwelling Forecasts in the California Current System 加利福尼亚洋流系统的季节性上升流预测

IF 4.6 1区地球科学

Geophysical Research Letters Pub Date : 2024-11-18 DOI: 10.1029/2024GL111083

Dillon J. Amaya, Michael G. Jacox, Michael A. Alexander, Steven J. Bograd, Liwei Jia

引用次数: 0

Possible Causes for the Unprecedented Low/High Tropical Cyclone Activities in the Northern Pacific/Atlantic in 2023 El Niño 2023 年厄尔尼诺现象导致北太平洋/大西洋出现前所未有的低/高热带气旋活动的可能原因

IF 4.6 1区地球科学

Geophysical Research Letters Pub Date : 2024-11-16 DOI: 10.1029/2024GL111964

Kuan-Chieh Chen, Chi-Cherng Hong, Chi-Chun Chang, Jun Chiang, Sheng-Hsiang Chang

引用次数: 0

Substantial Increase in Sub–Daily Precipitation Extremes of Flooding Season Over China 中国汛期日以下极端降水量大幅增加

IF 4.6 1区地球科学

Geophysical Research Letters Pub Date : 2024-11-16 DOI: 10.1029/2024GL112182

Yujie Wang, Lianchun Song, Pengke Shen, Yan Yang

{"title":"Substantial Increase in Sub–Daily Precipitation Extremes of Flooding Season Over China","authors":"Yujie Wang, Lianchun Song, Pengke Shen, Yan Yang","doi":"10.1029/2024GL112182","DOIUrl":"10.1029/2024GL112182","url":null,"abstract":"Understanding sub-daily precipitation extremes (SPEs) can provide scientific insights for taking effective measures to mitigate climate risks. Leveraging gauge observations at hourly precipitation in 2,312 meteorological stations and extreme sub-daily precipitation indices (ESPIs), we investigate the changes of SPEs in flooding season of 1971–2022 in China. On country scale, the occurrences and intensity of SPEs have significantly increased and even accelerated since the 21st century, suggesting increases in 2010s by 15%–38% compared with that in 1970s. The SPE risks for 20-year and 50-year return-period increased by 2–4 and 8–20 times in 2001–2022 compared with that in 1971–2000, respectively. Over 80% stations are found to have positive trends in all ESPIs. On regional scale, seven sub-regions experienced significant increases in ESPIs with larger magnitudes in the East China. The enlarged 500-hPa geopotential height, 700-hPa pseudoequivalent potential temperature, 700-hPa specific humidity, saturated vapor pressure and urbanization ratio may be bonded to more SPEs.","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"51 22","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024GL112182","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydroacoustic Observations Reveal Drivers of Mixing and Salinization of a Karst Subterranean Estuary During Intense Precipitation 水声观测揭示强降水期间喀斯特地下河口混合和盐碱化的驱动因素

IF 4.6 1区地球科学

Geophysical Research Letters Pub Date : 2024-11-16 DOI: 10.1029/2024GL109993

Neil K. Ganju, John W. Pohlman, Steven E. Suttles, David Brankovits

{"title":"Hydroacoustic Observations Reveal Drivers of Mixing and Salinization of a Karst Subterranean Estuary During Intense Precipitation","authors":"Neil K. Ganju, John W. Pohlman, Steven E. Suttles, David Brankovits","doi":"10.1029/2024GL109993","DOIUrl":"10.1029/2024GL109993","url":null,"abstract":"Karst subterranean estuaries within globally ubiquitous carbonate aquifers are coastal groundwater ecosystems that provide an essential water resource for human populations. To understand the drivers of salinization within a coastal aquifer in the Yucatan Peninsula (Mexico), we employed hydroacoustics in flooded caves to observe how oceanic and atmospheric events facilitate mixing between the meteoric lens (fresh-brackish groundwater) and the saline groundwater on tidal and episodic timescales. Precipitation during Tropical Storm Carlotta increased the flow and salinity of the meteoric lens without evidence for vertical mixing across the halocline. We postulate that vertical migration of haloclines in the conduit relative to those within the rock matrix during precipitation creates lateral density gradients that drive mixing, and ultimately creates a brackish layer within the meteoric lens. These results provide a mechanistic explanation for vertical and lateral exchange in a coastal carbonate aquifer, which has implications for groundwater response to future climatic change.","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"51 22","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024GL109993","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Satellite Geodesy Uncovers 15 m of Slip on a Detachment Fault Prior to the 2018 Collapse at Anak Krakatau, Indonesia 卫星大地测量发现印度尼西亚喀拉喀托火山在 2018 年崩塌前有 15 米的剥离断层滑动

IF 4.6 1区地球科学

Geophysical Research Letters Pub Date : 2024-11-16 DOI: 10.1029/2024GL112296

Young Cheol Kim, Christelle Wauthier, Thomas R. Walter

引用次数: 0

New Late Cretaceous Paleomagnetic Results From the Eastern Qiangtang Terrane: Implications for the Postcollisional Extrusion and Convergence of the Southeastern Tibetan Plateau 东羌塘地层晚白垩世古地磁新发现：对青藏高原东南部碰撞后挤压和辐合的影响

IF 4.6 1区地球科学

Geophysical Research Letters Pub Date : 2024-11-16 DOI: 10.1029/2024GL112055

Jiahui Ma, Tianshui Yang, Fei Han, Jiacheng Liang, Xianwei Jiao, Suo Wang, Weiwei Bian, Yiming Ma, Shihong Zhang, Huaichun Wu, Haiyan Li

{"title":"New Late Cretaceous Paleomagnetic Results From the Eastern Qiangtang Terrane: Implications for the Postcollisional Extrusion and Convergence of the Southeastern Tibetan Plateau","authors":"Jiahui Ma, Tianshui Yang, Fei Han, Jiacheng Liang, Xianwei Jiao, Suo Wang, Weiwei Bian, Yiming Ma, Shihong Zhang, Huaichun Wu, Haiyan Li","doi":"10.1029/2024GL112055","DOIUrl":"https://doi.org/10.1029/2024GL112055","url":null,"abstract":"To refine the postcollisional extrusion and convergence history of the southeastern Tibetan Plateau, we report a quality paleomagnetic data set from Upper Cretaceous redbeds of the eastern Qiangtang Terrane (QT), where is situated at the front edge of eastern Himalayan Syntaxis. The 32 site-mean directions provide a mean pole at 75.4°N, 176.8°E (A95 = 2.4°) and a paleolatitude of 31.8 ± 2.4°N for the Mangkang area. Comparison with reliable Late Cretaceous paleomagnetic data from the eastern QT and East Asia indicates that the eastern QT experienced a southward extrusion of 940 ± 310 km after the Late Cretaceous. Comparing Late Cretaceous paleolatitudes estimated from the eastern QT and Lhasa terrane (LT) reveals a paleolatitude difference of 2,390 ± 620 km. Such a great latitudinal convergence can be attributed to the fact that some continental terranes originally located between the eastern LT and QT were laterally extruded after the Late Cretaceous.","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"51 22","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024GL112055","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy Conversion Associated With Anomalous Magnetic Topology Sublayers in the Inner Low-Latitude Boundary Layer 与内低纬度边界层异常磁拓扑子层有关的能量转换

IF 4.6 1区地球科学

Geophysical Research Letters Pub Date : 2024-11-16 DOI: 10.1029/2024GL112664

Ping Zhong, Zhihong Zhong, Meng Zhou, Ye Pang, Liangjin Song, Xiaohua Deng

{"title":"Energy Conversion Associated With Anomalous Magnetic Topology Sublayers in the Inner Low-Latitude Boundary Layer","authors":"Ping Zhong, Zhihong Zhong, Meng Zhou, Ye Pang, Liangjin Song, Xiaohua Deng","doi":"10.1029/2024GL112664","DOIUrl":"10.1029/2024GL112664","url":null,"abstract":"The low-latitude boundary layer (LLBL) is a crucial region for the transfer of mass, momentum, and energy between the solar wind and the planetary magnetosphere. However, the processes of energy conversion within this layer are not well understood. In this study, the anomalous magnetic topology sublayers (AMTSs) within Earth's inner LLBL are investigated during the local reconnection inactive period, using data from the Magnetospheric Multiscale (MMS) mission. We present the first in situ observations showing that these AMTSs lead to significant energy conversion within the inner LLBL. The electron populations in AMTSs are dominated by either the magnetospheric or magnetosheath populations, creating a substantial electron temperature gradient between these sublayers. This temperature gradient, in turn, generates non-ideal electric fields through the pressure gradient term. Our findings improve the understanding of dynamics in the planetary LLBL, highlighting the importance of AMTSs in the energy conversion process.","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"51 22","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024GL112664","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamically Triggered Tectonic Tremors and Earthquakes in the Caucasian Region Following the 2023 Kahramanmaraş, Türkiye, Earthquake Sequence 2023 年土耳其卡赫拉曼马拉什地震序列之后高加索地区动态触发的构造震荡和地震

IF 4.6 1区地球科学

Geophysical Research Letters Pub Date : 2024-11-16 DOI: 10.1029/2024GL110786

Dongdong Yao, Zhigang Peng, Chang Ding, Eric Sandvol, Tea Godoladze, Gurban Yetirmishli

{"title":"Dynamically Triggered Tectonic Tremors and Earthquakes in the Caucasian Region Following the 2023 Kahramanmaraş, Türkiye, Earthquake Sequence","authors":"Dongdong Yao, Zhigang Peng, Chang Ding, Eric Sandvol, Tea Godoladze, Gurban Yetirmishli","doi":"10.1029/2024GL110786","DOIUrl":"10.1029/2024GL110786","url":null,"abstract":"Deep tectonic tremor has been observed along major subduction zones and several continental strike-slip faults around the Pacific Rim and the Caribbean. However, it has not be widely identified in other tectonically active regions such as the Alpine-Himalayan orogenic belt yet. Here we present dynamically triggered tremors and microearthquakes in the Caucasian Region following the 2023 Mw 7.8 and Mw 7.5 mainshocks in the 2023 Kahramanmaraş, Türkiye, earthquake sequence. We observe triggered deep tectonic tremors within Azerbaijan, where seismological evidences suggest pre-existing subduction slabs. Meanwhile, we document cases of triggered earthquakes in Azerbaijan and Georgia, and Javakheti highland near the border of Georgia and Armenia. These triggered earthquakes are either associated with mud volcanism or volcanic formations. Our results highlight a variety of responses to dynamic stress perturbations, suggesting high susceptibility to dynamic stress perturbations and a broad spectrum of slip behaviors for critically stressed faults in the Caucasian region.","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"51 22","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024GL110786","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the Relationship Between the Banded Hiss Distribution and Plasmapause Location: A Survey of Van Allen Probes Observations 带状嘶嘶声分布与质点位置之间的关系：范艾伦探测器观测调查

IF 4.6 1区地球科学

Geophysical Research Letters Pub Date : 2024-11-16 DOI: 10.1029/2024GL111893

Junhu Dong, Zheng Xiang, Binbin Ni

引用次数: 0