JAMSTEC Report of Research and Development最新文献

Static penetration test on deep-sea shark skins - reports on needle types and penetration forces for developing an autonomous in situ biopsy equipment 深海鲨鱼皮的静态穿透试验。研制自主原位活检设备用针型和穿透力报告

JAMSTEC Report of Research and Development Pub Date : 2019-04-01 DOI: 10.5918/JAMSTECR.28.35

S. Tsuchida, M. Kawato, Shinpei Gotoh, Yoshimi Takahashi, Ayaka Kasai, K. Fujikura, Y. Fujiwara

{"title":"Static penetration test on deep-sea shark skins - reports on needle types and penetration forces for developing an autonomous in situ biopsy equipment","authors":"S. Tsuchida, M. Kawato, Shinpei Gotoh, Yoshimi Takahashi, Ayaka Kasai, K. Fujikura, Y. Fujiwara","doi":"10.5918/JAMSTECR.28.35","DOIUrl":"https://doi.org/10.5918/JAMSTECR.28.35","url":null,"abstract":"Top predators play an important role in maintaining biomass and biodiversity of most ecosystems. However, functional roles of the top predators in deep sea are still poorly understood. Large, predatory sharks are considered as the top predators in the deep sea, some of which are known to have a long-life span and a long-term maturation period. Most studies of the sharks have been conducted using lethal methods such as deep-sea trawls without attention to their vulnerability. It is urgent to develop non-lethal approaches for the shark studies. An autonomous in situ biopsy equipment is one solution, which collect a small amount of soft tissues non-lethally from the target fish. For developing the equipment, we conducted static penetration tests using three types of biopsy needles, i.e., conical, bevel, and trigonal pyramid shapes with the tip angles of 20, 30 and 40 degrees. Three species of deep-sea sharks, the roughskin dogfish Centroscymnus owstonii, the kitefin shark Dalatias licha, and the rough longnose dogfish Deania hystricosa, were applied for the penetration tests. The lowest penetration forces were 22.1 N on the skin of D. hystricosa using the trigonal pyramid needle with the tip angle of 30 degrees, 65.3 N on that of C. owstonii, and 95.3 N on that of D. licha both using the trigonal pyramid needle with the tip angle of 20 degrees. The highest forces were recorded on the D. licha skins among the three sharks using any types of needles, which were 3.6 to 6.0 times larger than that of D. hystricosa and 55.3 times larger than that of the chub mackerel Scomber japonicus. We concluded that the trigonal pyramid with the tip angle of 20 or 30 degrees is the most suitable shape for our biopsy needle and that the shooting force has to be larger than 95.3 N for collecting tissues from hard-skin species such as D. Licha.","PeriodicalId":129203,"journal":{"name":"JAMSTEC Report of Research and Development","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115638373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fine resolution basin database using 10m DEM at the area along Sanriku coast of Japan 日本三陆海岸10m DEM精细分辨率流域数据库

JAMSTEC Report of Research and Development Pub Date : 2019-04-01 DOI: 10.5918/JAMSTECR.28.54

Takehisa Yamakita, H. Imaki

引用次数: 0

JAMSTEC Model Intercomparision Project (JMIP) JAMSTEC模型比较项目(JMIP)

JAMSTEC Report of Research and Development Pub Date : 2019-04-01 DOI: 10.5918/JAMSTECR.28.5

C. Kodama, A. Kuwano‐Yoshida, S. Watanabe, T. Doi, H. Kashimura, T. Nasuno

{"title":"JAMSTEC Model Intercomparision Project (JMIP)","authors":"C. Kodama, A. Kuwano‐Yoshida, S. Watanabe, T. Doi, H. Kashimura, T. Nasuno","doi":"10.5918/JAMSTECR.28.5","DOIUrl":"https://doi.org/10.5918/JAMSTECR.28.5","url":null,"abstract":"The JAMSTEC Model Intercomparison Project (JMIP) provides a first opportunity to systematically compare multiple global models developed and/or used in JAMSTEC with the aim of moving toward better weather and climate predictions. Here, we evaluate climate simulations obtained from atmospheric models (AFES and MIROC5), atmospheric model with slab ocean (NICAM.12), and fully coupled model (SINTEX-F1 and SINTEX-F2). In these simulations, the sea surface temperature is fixed (for AFES and MIROC5) or nudged (NICAM.12, SINTEX-F1, and SINTEX-F2) to the observed historical one. We focus on the climatology and variability of precipitation and its associated phenomena, including the basic state, the energy budget of the atmosphere, extratropical cyclones, teleconnection, and the Asian monsoon. We further discuss the possible causes of similarities and differences among the five JMIP models. Though some or most of the dynamical and physical packages in the JMIP models have been developed independently, common model biases are found among them. The AFES and MIROC5, and the SINTEX-F1 and SINTEX-F2, show strong similarities. In many respects, NICAM.12 shows unique characteristics, such as the distributions of precipitation, shortwave radiation, and explosive extratropical cyclones and the onset of the Asian summer monsoon. To some extent, the similarities and differences among the JMIP models overlap with those among the Coupled Model Intercomparison Project Phase-5 (CMIP5) models, suggesting that JMIP can be used as a simple and in-depth version of CMIP to investigate the mechanisms of model bias. We suggest that this JMIP framework could be expanded to an intercomparison of weekly-to-seasonal scale weather forecasting; here, more fruitful discussion is expected through intensive collaboration among modeling and observation groups.","PeriodicalId":129203,"journal":{"name":"JAMSTEC Report of Research and Development","volume":"68 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129544790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Establishment of co-management system and expanded opportunities of utilization on biological samples of JAMSTEC 建立共同管理制度，扩大JAMSTEC生物样品利用机会

JAMSTEC Report of Research and Development Pub Date : 2019-04-01 DOI: 10.5918/JAMSTECR.28.43

T. Iseto, Nobuyuki Saito, M. Ichiyanagi, M. Morioka, T. Hosono, S. Tsuchida, T. Kitayama, Tomoki Sasaki, Hideaki Saito, Masatomo Hisazumi, Takako Sato, K. Fujikura, A. Sonoda, Y. Hanafusa

{"title":"Establishment of co-management system and expanded opportunities of utilization on biological samples of JAMSTEC","authors":"T. Iseto, Nobuyuki Saito, M. Ichiyanagi, M. Morioka, T. Hosono, S. Tsuchida, T. Kitayama, Tomoki Sasaki, Hideaki Saito, Masatomo Hisazumi, Takako Sato, K. Fujikura, A. Sonoda, Y. Hanafusa","doi":"10.5918/JAMSTECR.28.43","DOIUrl":"https://doi.org/10.5918/JAMSTECR.28.43","url":null,"abstract":"̶ Hanafusa 1 Japan Agency for Marine-Earth Science and Technology (JAMSTEC) had established “Basic Policies on the Handling of Data and Samples” in 2007 and subsequently expanded opportunities of utilization on data and samples obtained by JAMSTEC activities. For biological samples, while the metadata of the samples are integrated into a database, the samples are brought to various institutions and laboratories by the science party members who collect the samples. As such, JAMSTEC biological samples are operated under a co-management system by Data Management O ﬃ ce of JAMSTEC and science party members of various institutions. This system may sound unusual, but we regard it is a probable system to keep track of the locations of dispersed biological samples belonging to an institution and to operate the samples by the institution. Also, we open the metadata of the samples through a database and accept requests for secondary uses of the samples. JAMSTEC biological samples include not only the samples for long-term storage like those of museums and bioresource centers, but also the samples which is going to be used up in short-terms by scientists. Therefore, JAMSTEC opens wider range of samples to the public than other institutions do. This management system was established intend to maximize contributions of the biological samples to sciences","PeriodicalId":129203,"journal":{"name":"JAMSTEC Report of Research and Development","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114692417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Radiolarians from dredged sedimentary rocks from off southeast Boso Peninsula 波索半岛东南海域疏浚沉积岩中的放射虫

JAMSTEC Report of Research and Development Pub Date : 2018-09-01 DOI: 10.5918/JAMSTECR.27.77

K. Kawamura, I. Motoyama, Keita Yoshimoto

引用次数: 0

Determination of stable isotope ratios of Ba by 130Ba–135Ba double-spike total evaporation method using thermal ionization mass spectrometry (DS-TEV-TIMS) 热电离质谱130Ba-135Ba双峰全蒸发法测定Ba的稳定同位素比值

JAMSTEC Report of Research and Development Pub Date : 2018-09-01 DOI: 10.5918/JAMSTECR.27.109

T. Miyazaki, J. Kimura, S. Wakaki, B. Vaglarov, S. Haraguchi

引用次数: 0

Diatom ooze and diatomite–diatomaceous sediments in and around the North Pacific Ocean 北太平洋及其周围的硅藻泥和硅藻-硅藻沉积物

JAMSTEC Report of Research and Development Pub Date : 2018-09-01 DOI: 10.5918/JAMSTECR.27.26

I. Koizumi, Hirofumi Yamamoto

{"title":"Diatom ooze and diatomite–diatomaceous sediments in and around the North Pacific Ocean","authors":"I. Koizumi, Hirofumi Yamamoto","doi":"10.5918/JAMSTECR.27.26","DOIUrl":"https://doi.org/10.5918/JAMSTECR.27.26","url":null,"abstract":"Yamamoto 2 The geographical distribution and geological occurrence of diatom ooze and diatomite–diatomaceous sediments were reviewed in and around the middle-high latitude of the North Paciﬁc Ocean including the Bering and Japan seas. Diatoms are the most abundant microfossils found in the bottom sediments of the northern North Paciﬁc Ocean, and the marginal Bering, Okhotsk and Japan seas. The marginal basins in the middle-high latitude of the North Paciﬁc Ocean were formed by tectonic and volcanic activities in the late Oligocene–early Miocene. The early middle Miocene diatomite intercalated with siliceous sandstone to siltstone was deposited in shallow basins. The middle-late Miocene diatomite and diatomaceous mudstone was formed by global cooling and increased primary productivity under anoxic bottom-water conditions at bathyal depths. The late Miocene to early Pliocene diatomite and diatomaceous siltstone formed under oxic bottom-water conditions is widely distributed. During the late Pliocene-Pleistocene, turbidity sands and / or silts capped and diluted the diatomaceous sediment. The timing of these changes in sedimentary facies is simultaneous in the North","PeriodicalId":129203,"journal":{"name":"JAMSTEC Report of Research and Development","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132437694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Construction of near real-time forecast system using global nonhydrostatic model and actual uses at JAMSTEC intensive observations 基于全局非静力模型的近实时预报系统构建及其在JAMSTEC密集观测中的实际应用

JAMSTEC Report of Research and Development Pub Date : 2018-09-01 DOI: 10.5918/JAMSTECR.27.47

Mikiko Ikeda, T. Nasuno

引用次数: 0

Multichannel seismic reflection data from the southern part of the Japan Sea 日本海南部多道地震反射资料

JAMSTEC Report of Research and Development Pub Date : 2018-09-01 DOI: 10.5918/JAMSTECR.27.127

T. No, Takeshi Sato, S. Kodaira, R. Arai, S. Miura

引用次数: 2

Regional scale rifting and subsidence in the vicinity of Iheya-Minor Ridge, the middle Okinawa Trough: Cruise results of KM17-12C 冲绳海槽中部Iheya-Minor Ridge附近的区域尺度裂陷:KM17-12C的巡航结果

JAMSTEC Report of Research and Development Pub Date : 2018-09-01 DOI: 10.5918/JAMSTECR.27.68

H. Kumagai, K. Kitada, A. Takahashi

引用次数: 0