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The WheelCams on the IDEFIX rover. IDEFIX漫游者的轮式摄像头。
IF 2.8 3区 地球科学
Progress in Earth and Planetary Science Pub Date : 2025-01-01 Epub Date: 2025-07-14 DOI: 10.1186/s40645-025-00725-3
Naomi Murdoch, Valérian Lalucaa, Cecily Sunday, Simon Tardivel, Jean Bertrand, Nicolas Théret, Damien Vivet, Alice Amsili, Colas Robin, Panos Delton, Alexia Duchene, Quentin Douaglin, Antoine Maillard, Cedric Virmontois, Pierre Vernazza, Laurent Jorda, Olivier Groussin, Hideaki Miyamoto, Jean-Baptiste Vincent, Jessica Flahaut, Jens Biele, Olivier Barnouin, Christine Hartzel, Fabien Buse, Stefan Barthelmes, Stephan Ulamec, Patrick Michel, Julien Baroukh
{"title":"The WheelCams on the IDEFIX rover.","authors":"Naomi Murdoch, Valérian Lalucaa, Cecily Sunday, Simon Tardivel, Jean Bertrand, Nicolas Théret, Damien Vivet, Alice Amsili, Colas Robin, Panos Delton, Alexia Duchene, Quentin Douaglin, Antoine Maillard, Cedric Virmontois, Pierre Vernazza, Laurent Jorda, Olivier Groussin, Hideaki Miyamoto, Jean-Baptiste Vincent, Jessica Flahaut, Jens Biele, Olivier Barnouin, Christine Hartzel, Fabien Buse, Stefan Barthelmes, Stephan Ulamec, Patrick Michel, Julien Baroukh","doi":"10.1186/s40645-025-00725-3","DOIUrl":"10.1186/s40645-025-00725-3","url":null,"abstract":"<p><p>IDEFIX, the Martian Moons eXploration (MMX) mission Phobos rover, will be the first of its kind to attempt wheeled-locomotion on a low-gravity surface. The IDEFIX WheelCams, two cameras placed on the underside of the rover looking at the rover wheels, provide a unique opportunity to study the surface properties of Phobos, regolith behaviour on small-bodies and rover mobility in low-gravity. The information gained about Phobos' surface will be of high importance to the landing and sampling operations of the main MMX spacecraft, in addition to being valuable for understanding the surface processes and geological history of Phobos. Here we introduce the WheelCam science objectives, the instrument and the characterisation activities. We also discuss the on-going preparations linked to the analysis and interpretation of the WheelCam images on the surface of Phobos.</p>","PeriodicalId":54272,"journal":{"name":"Progress in Earth and Planetary Science","volume":"12 1","pages":"54"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12259770/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144651196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Natural 14C abundances and stable isotopes suggest discrete uptake routes for carbon and nitrogen in cold seep animals 天然 14C 丰度和稳定同位素表明,冷渗漏动物对碳和氮的吸收途径各不相同
IF 3.9 3区 地球科学
Progress in Earth and Planetary Science Pub Date : 2024-09-12 DOI: 10.1186/s40645-024-00648-5
Hidetaka Nomaki, Shigeaki Kojima, Yosuke Miyairi, Yusuke Yokoyama, Chong Chen
{"title":"Natural 14C abundances and stable isotopes suggest discrete uptake routes for carbon and nitrogen in cold seep animals","authors":"Hidetaka Nomaki, Shigeaki Kojima, Yosuke Miyairi, Yusuke Yokoyama, Chong Chen","doi":"10.1186/s40645-024-00648-5","DOIUrl":"https://doi.org/10.1186/s40645-024-00648-5","url":null,"abstract":"<p>Cold seeps, where geofluids containing methane and other hydrocarbons originating from the subseafloor seeps through the sediment surface, play important roles in the elemental and energy flux between sediment and seawater. These seep sites often harbor communities of endemic animals supported by chemolithoautotrophic bacteria, either through symbiosis or feeding. Despite these animal communities being intensively studied since their discovery in the 1980’s, the contribution of carbon from seep fluid to symbiotic microbes and subsequently host animals remains unclear. Here, we used natural-abundance radiocarbon to discern carbon sources: the ambient bottom water or the seeping geofluid. The <sup>14</sup>C concentrations were measured for vesicomyid clams, a parasitic calamyzine polychaete, and a siboglinid tubeworm species from four different cold seep sites around Japan. We found most vesicomyid clams exhibiting <sup>14</sup>C concentrations slightly lower than that of the ambient bottom water, suggesting up to 9% of C for chemolithoautotrophy originates from geofluid DIC. The different extent of fluid contribution across species may be explained by different routes to incorporate DIC and/or different DIC concentrations in the geofluid at each seep site. Stable nitrogen isotopic compositions further suggested N incorporation from geofluids in these clams, where the burrowing depth may be a key factor in determining their δ<sup>15</sup>N values. The siboglinid tubeworm showed a clear dependency for geofluid DIC, with a contribution of &gt; 40%. Our results demonstrate the effectiveness of <sup>14</sup>C analyses for elucidating the nutritional ecology of cold seep animals and their symbionts, as was previously shown for hydrothermal vent ecosystems.</p>\u0000","PeriodicalId":54272,"journal":{"name":"Progress in Earth and Planetary Science","volume":"58 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142192440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrical conductivity of mantle minerals beneath East Asia revealed by geomagnetic observatory data 地磁观测站数据揭示的东亚地下地幔矿物电导率
IF 3.9 3区 地球科学
Progress in Earth and Planetary Science Pub Date : 2024-09-06 DOI: 10.1186/s40645-024-00653-8
Yuyan Zhang, Mina Ma, Yujia Hu, Yiliang Han, Yanhui Zhang
{"title":"Electrical conductivity of mantle minerals beneath East Asia revealed by geomagnetic observatory data","authors":"Yuyan Zhang, Mina Ma, Yujia Hu, Yiliang Han, Yanhui Zhang","doi":"10.1186/s40645-024-00653-8","DOIUrl":"https://doi.org/10.1186/s40645-024-00653-8","url":null,"abstract":"<p>The electrical conductivity of the earth’s mantle can provide important information about geodynamic phenomena. East Asia is associated with complex tectonics and geodynamic processes. Hence, it is necessary to better understand the deep structure beneath East Asia. In this study, geomagnetic data obtained from East Asian observatories are employed to image the conductivity structure of the mantle at depths ranging from 410 to 900 km. First, the data are processed using the modified bounded influence remote reference processing (BIRRP) method and the ratio method is used to correct for the ocean effect. Thereafter, the stable <i>C</i>-response curves at the 27 observatories are estimated, and 1D electrical conductivity models for these observatories are established using the L-BFGS method. The conductivity-depth profiles reveal a heterogeneous distribution of the electrical conductivity beneath East Asia. The mantle transition zone (MTZ) beneath East China and Japan is found to be more conductive, whereas the MTZ beneath central and southern regions of China is more resistive. In East China, the dehydration of the stagnant Pacific slab may lead to an increase in the conductivity of the mantle minerals. There is also the possibility of upwelling of the thermal material from the lower mantle beneath the Japanese Island arc. In Northwest China, there exists a large high-conductive body beneath the Tarim area, which could indicate an upwelling of the Tarim mantle plume. Our results provide insights into the deep structure of the earth at the mantle scale.</p>\u0000","PeriodicalId":54272,"journal":{"name":"Progress in Earth and Planetary Science","volume":"53 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142192441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Kuroshio Extension cold-core ring and wind drop-off observed in 2021–2022 winter 2021-2022 年冬季观测到的黑潮延伸冷核环和风下降现象
IF 3.9 3区 地球科学
Progress in Earth and Planetary Science Pub Date : 2024-09-05 DOI: 10.1186/s40645-024-00649-4
Akira Nagano, Minoru Kitamura, Kensuke Watari, Iwao Ueki
{"title":"Kuroshio Extension cold-core ring and wind drop-off observed in 2021–2022 winter","authors":"Akira Nagano, Minoru Kitamura, Kensuke Watari, Iwao Ueki","doi":"10.1186/s40645-024-00649-4","DOIUrl":"https://doi.org/10.1186/s40645-024-00649-4","url":null,"abstract":"<p>Energetic cyclonic mesoscale eddies, which are called cold-core rings and are shed southward from the Kuroshio Extension jet and form closed streamlines, affect the atmosphere through the heat exchange across the sea surface. To investigate the effect of rings on the atmosphere, we performed atmosphere and ocean observations across a cold-core ring centered around 34.5° N, 150.0° E using a research vessel from November 2021 to January 2022 and a shallow-water profiling float from November 23 to 28, 2021. As heat is released from the sea surface, no significant spatial contrast in the sea surface and mixed layer temperatures was detected across the ring. Meanwhile, the sea surface wind was occasionally observed to be weak around the ring, possibly through the air–sea interactions. The wind drop-off maintained a turbulent heat flux small around the ring. The wind field associated with the wind drop-off was examined by the rotary empirical orthogonal function analysis of the satellite sea surface wind data. The minimum of the sea surface wind is found to shift northward relative to the ring center and to be more than approximately 5 m s<span>(^{-1})</span> lower than the surrounding region. The shallow-water profiling float deployed around the ring center observed a rapid freshening event in the mixed layer, which can be attributed to the water intrusion from the north of the Kuroshio Extension jet through the interaction with the jet. This suggests that the cold water from the north continually affects the atmosphere without leaving traces in the shipboard sea surface temperature observations.</p>","PeriodicalId":54272,"journal":{"name":"Progress in Earth and Planetary Science","volume":"49 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142192631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unsinkable, long-drifting, millimeter-sized pumice of the 2021 eruption of Fukutoku-Oka-no-Ba submarine volcano 2021 年 Fukutoku-Oka-no-Ba 海底火山喷发时产生的无法沉没、长期漂移、毫米大小的浮石
IF 3.9 3区 地球科学
Progress in Earth and Planetary Science Pub Date : 2024-09-04 DOI: 10.1186/s40645-024-00652-9
Shingo Takeuchi, Kosuke Ishige, Shimpei Uesawa, Yukiko Suwa
{"title":"Unsinkable, long-drifting, millimeter-sized pumice of the 2021 eruption of Fukutoku-Oka-no-Ba submarine volcano","authors":"Shingo Takeuchi, Kosuke Ishige, Shimpei Uesawa, Yukiko Suwa","doi":"10.1186/s40645-024-00652-9","DOIUrl":"https://doi.org/10.1186/s40645-024-00652-9","url":null,"abstract":"<p>Understanding the relationship between pumice formation and long-term floatability in seawater is becoming increasingly important in terms of eruption dynamics, material cycles, biological and environmental effects, and ocean hazards. Pumice rafts were produced during the 2021 eruption of the Fukutoku-Oka-no-Ba submarine volcano in the Pacific Ocean, far from the Japanese archipelago. The pumice rafts reached the Amami-Ōshima and Okinawa Islands approximately two months after the eruption and continued to cover the sea surface at several bays and ports, providing a great opportunity to study the characteristics of raft pumices. Sieve analysis of the floating pumice indicated that the pumice rafts characteristically contained several millimeter-sized particles with a peak at 2–4 mm. This evidence raises an important question why the millimeter-sized, Fukutoku-Oka-no-Ba 2021 pumice particles were able to float for over two months, which exceeds the floatation time shown in previous studies. To answer this question, a porosity measurement technique for millimeter-to-centimeter-sized pumice particles was established and applied to drifting pumice that erupted during the Fukutoku-Oka-no-Ba 2021 eruption. The total, connected, and isolated porosities (including errors) were acquired for floating and sunken pumice particles. As studied for the floating pumice from past submarine eruptions, most floating pumice particles contain a high amount of isolated porosity (&gt; 30 vol%) and are thus unsinkable even when the pumice size is in the millimeter scale. This study emphasizes that skeletal density is a useful measure for the determination of pumice floatability (sinkable or unsinkable). As the particle size decreases, crystals are lost from the floating pumice particles, suggesting that the particle size of the floating pumice is affected by its petrological properties (crystal content and size). A comparison with natural pumices from subaerial eruptions and experimental pumices from magma decompression experiments suggests that the Fukutoku-Oka-no-Ba 2021 pumices contain abundant isolated pores due to the suppression of expansion after fragmentation by quenching in seawater, and that the relatively low to moderate crystal content in the magma (&lt; 17 vol%) may contribute to favorable conditions to produce abundant, millimeter-sized, unsinkable pumice.</p><p>Most floating pumices have lower saturation density than seawater due to abundant isolated porosity (&gt; 30 vol%) and are thus unsinkable even when the pumice size is in the millimeter scale. </p>","PeriodicalId":54272,"journal":{"name":"Progress in Earth and Planetary Science","volume":"132 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142192632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Integration of new zircon U–Pb ages with biostratigraphy to establish a high-precision age model of the Miocene Nakayama Formation on Sado Island in Central Japan 将新的锆石 U-Pb 年龄与生物地层学相结合,建立日本中部佐渡岛中新世中山层的高精度年龄模型
IF 3.9 3区 地球科学
Progress in Earth and Planetary Science Pub Date : 2024-09-02 DOI: 10.1186/s40645-024-00651-w
Jumpei Yoshioka, Kenji M. Matsuzaki, Sota Niki, Junichiro Kuroda, Takafumi Hirata
{"title":"Integration of new zircon U–Pb ages with biostratigraphy to establish a high-precision age model of the Miocene Nakayama Formation on Sado Island in Central Japan","authors":"Jumpei Yoshioka, Kenji M. Matsuzaki, Sota Niki, Junichiro Kuroda, Takafumi Hirata","doi":"10.1186/s40645-024-00651-w","DOIUrl":"https://doi.org/10.1186/s40645-024-00651-w","url":null,"abstract":"<p>The most common age constraint for the diatomaceous sediments is biostratigraphy of siliceous microfossils. Although biostratigraphy is a powerful tool to establish stratigraphy and correlate with sedimentary sequences in other sites, biostratigraphy generally includes uncertainties difficult to evaluate. In this study, we measured zircon U–Pb ages of eight tuff beds intercalated with diatomaceous mudstone of the Nakayama Formation on Sado Island in Central Japan and integrated the U–Pb ages with diatom and radiolarian biostratigraphy, whose ages and errors were re-evaluated by this study, to establish an age model precisely representing the sedimentary age. Two tuff beds in the upper and middle part of the formation offered zircon U–Pb ages of 6.7 ± 0.2 Ma and 10.87 ± 0.07 Ma, which are consistent with biostratigraphy, and provided a good example of effective integration of zircon U–Pb ages with the biostratigraphy. On the other hand, zircon U–Pb ages of the other six tuff beds in the lower part are around 12 Ma and not distinguishable from each other. In addition, older zircon grains in the 6 tuff beds are assembled in the interval from 30 to 20 Ma, which is consistent with the age of the volcanic basement rocks forming most part of Sado Island. Similarities in chemical compositions of glass shards and age distributions of zircon grains indicate that the volcaniclastic components in the tuff beds should originate from single or associated magmatic activities.</p>","PeriodicalId":54272,"journal":{"name":"Progress in Earth and Planetary Science","volume":"75 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142192633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrochemical survey of electroactive microbial populations in deep-sea hydrothermal fields 对深海热液场中的电活性微生物种群进行电化学调查
IF 3.9 3区 地球科学
Progress in Earth and Planetary Science Pub Date : 2024-08-28 DOI: 10.1186/s40645-024-00650-x
Masahiro Yamamoto, Yoshifumi Kawada, Yoshihiro Takaki, Kosuke Shimoniida, Mariko Shitara, Akiko Tanizaki, Hiroyuki Kashima, Miho Hirai, Yutaro Takaya, Tatsuo Nozaki, Takafumi Kasaya, Ken Takai
{"title":"Electrochemical survey of electroactive microbial populations in deep-sea hydrothermal fields","authors":"Masahiro Yamamoto, Yoshifumi Kawada, Yoshihiro Takaki, Kosuke Shimoniida, Mariko Shitara, Akiko Tanizaki, Hiroyuki Kashima, Miho Hirai, Yutaro Takaya, Tatsuo Nozaki, Takafumi Kasaya, Ken Takai","doi":"10.1186/s40645-024-00650-x","DOIUrl":"https://doi.org/10.1186/s40645-024-00650-x","url":null,"abstract":"<p>Electric discharge in deep-sea hydrothermal fields leads us to expect the existence of electroactive microbial ecosystems in the environments. Electrochemical properties such as electric field distribution on the seafloor and electrical conductivity of the rock can be useful indicators of searching electroactive microbial community in natural environments. We performed electric field measurements in deep-sea hydrothermal fields and collected rock samples by a remotely operative vehicle (ROV) operation. Several spots on the seafloor with strong electric fields were detected, which included both active hydrothermal vent areas and inactive sulfide deposits far from the vents. The electrical conductivity of the rock samples was correlated with the copper and iron sulfide content. Microbial community compositions of the rock samples were characterized by small subunit (SSU) rRNA gene amplicon sequencing analysis. The abundance of several microbial components, which are highly related to electroactive microorganisms such as <i>Geobacteraceae</i> and <i>Thiomicrorhabdus,</i> was affected by the electrical properties of rock samples. The results suggested that electrochemical properties on the seafloor would be related to the abundance of possible electroactive microbial populations, and that the electrochemical survey may be a powerful tool for exploring electroactive ecosystems.</p>\u0000","PeriodicalId":54272,"journal":{"name":"Progress in Earth and Planetary Science","volume":"14 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142192634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Basal emission rates of isoprene and monoterpenes from major tree species in Japan: interspecies and intraspecies variabilities 日本主要树种的异戊二烯和单萜烯基础排放率:树种间和树种内的差异
IF 3.9 3区 地球科学
Progress in Earth and Planetary Science Pub Date : 2024-07-30 DOI: 10.1186/s40645-024-00645-8
Akira Tani, Noboru Masui, Ting-Wei Chang, Motonori Okumura, Yutaka Kokubu
{"title":"Basal emission rates of isoprene and monoterpenes from major tree species in Japan: interspecies and intraspecies variabilities","authors":"Akira Tani, Noboru Masui, Ting-Wei Chang, Motonori Okumura, Yutaka Kokubu","doi":"10.1186/s40645-024-00645-8","DOIUrl":"https://doi.org/10.1186/s40645-024-00645-8","url":null,"abstract":"<p>Uncontrolled terpenoid emissions from forest trees in Japan may have contributed to high O<sub>3</sub> concentrations observed in urban and suburban areas. To estimate ozone formation via a series of reactions between NO<sub><i>x</i></sub> and terpenoids using atmospheric chemistry models, it is important to produce terpenoid emission inventories by collecting all reported emission data for the major tree species in Japan and examining their reliability. In this review, we first describe three different plant terpenoid emission types, i.e., isoprene-emitting type, monoterpene-emitting type with storage tissues and organs, and monoterpene-emitting type without storage tissues and organs. Second, we describe various methods for measuring plant terpenoid emissions, including a recently developed simplified method, and explain their reliability. We emphasized that applicable measurement methods depend on the terpenoid emission types. Data obtained using static chamber methods should not be considered because they have the highest uncertainty resulting from normal chamber materials that are not specific to terpenoid measurements and lack humidity control. Finally, we show the absolute values of the collected emission rates and describe their variability. The deciduous oak species, <i>Quercus serrata</i> and <i>Quercus mongolica</i> var. <i>crispula</i>, and bamboo species, <i>Phyllostachys pubescens</i> and <i>Phyllostachys bambusoides,</i> are strong isoprene emitters. Among the monoterpene emitters, four evergreen broadleaf trees, including three <i>Quercus</i> species, had the highest basal emission rate (BER). The monoterpene storage type conifers <i>Larix kaempferi</i> and <i>Pinus densiflora</i> have relatively lower BERs. Emission data are not available for <i>Castanopsis cuspidata</i>, and seasonal changes in emission rates have not been reported for several major tree species in the top 20 rankings. Within species, the reported emission rates of some tree species differed by threefold. These differences may be attributed to the reliability of the measurement and analytical systems, tree age, leaf morphology, environmental conditions, and genetic diversity. We emphasize the need for reliable measurements to achieve a more precise terpenoid emission inventory for major tree species in Japan.</p>\u0000","PeriodicalId":54272,"journal":{"name":"Progress in Earth and Planetary Science","volume":"15 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141870289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessing the relative activity of faulting along both flanks of the Ou Backbone Range, Tohoku Region, Japan, from fluvial geomorphic analyses 从河川地貌分析评估日本东北地区乌骨岭两侧断层的相对活动性
IF 3.9 3区 地球科学
Progress in Earth and Planetary Science Pub Date : 2024-07-10 DOI: 10.1186/s40645-024-00644-9
J. Bruce H. Shyu, Jhih-Hao Liao, Chia-Yu Chen, Hiroyuki Tsutsumi, Yasufumi Iryu
{"title":"Assessing the relative activity of faulting along both flanks of the Ou Backbone Range, Tohoku Region, Japan, from fluvial geomorphic analyses","authors":"J. Bruce H. Shyu, Jhih-Hao Liao, Chia-Yu Chen, Hiroyuki Tsutsumi, Yasufumi Iryu","doi":"10.1186/s40645-024-00644-9","DOIUrl":"https://doi.org/10.1186/s40645-024-00644-9","url":null,"abstract":"<p>The Ou Backbone Range in the Tohoku Region of Japan is bounded on its both sides by two major active fault systems: the Western Fault Zone of Kitakami Lowland in the east and the Eastern Fault Zone of Yokote Basin in the west. Although these two systems are primary active fault systems in the region, information on their long-term activity characteristics is still quite limited. Therefore, we analyzed the normalized channel steepness indexes of river valleys trending perpendicular to the range front along both flanks of the Ou Backbone Range. Our results show that the eastern flank has gentler river valleys, whereas rivers along the northwestern flank are steeper. Our field investigation shows that knickpoints in this area are mostly related to local lithologic boundaries or are check dams along the valleys, thus the river systems are likely under steady-state conditions. Hence, the steeper river valleys in northwestern Ou Backbone Range indicate a higher uplift rate of the area. Because both fault systems are primarily dip-slip reverse faults and do not have significant variations in their subsurface geometry, the faster uplift suggests that the northern segment of the Eastern Fault Zone of Yokote Basin has a higher slip rate. This is consistent with results of previous studies, and the fact that the rupture of the 1896 Rikuu earthquake, the only historical surface-rupturing event in this region, was only limited along the northern segment of this fault system.</p>","PeriodicalId":54272,"journal":{"name":"Progress in Earth and Planetary Science","volume":"13 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141567466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Imaging flow focusing and isolation of aqueous fluids in synthetic quartzite: implications for permeability and retained fluid fraction in deep-seated rocks 合成石英岩中水性流体的成像流动聚焦和分离:对深层岩石渗透性和保留流体部分的影响
IF 3.9 3区 地球科学
Progress in Earth and Planetary Science Pub Date : 2024-07-08 DOI: 10.1186/s40645-024-00632-z
Wakana Fujita, Michihiko Nakamura, Kentaro Uesugi, Philipp Eichheimer, Marcel Thielmann, Gregor J. Golabek
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