ライフサイエンスコーパス: seabed

1 substantial rock composition (50-75%) on the seabed.

2 and liquefaction potential of porous elastic seabed.

3 and liquefaction potential of porous elastic seabed.

4 from the vent forming a flow deposit on the seabed.

5 s discharged by flashfloods deposit onto the seabed.

6 e far-reaching fall deposits observed on the seabed.

7 ous secondary craters on the contemporaneous seabed.

8 ults are stationary or crawl slowly over the seabed.

9 at has passed through transformations on the seabed.

10 ng indirect evidence that they swam near the seabed.

11 sites expelling methane-rich fluids from the seabed.

12 ens of millions of years after burial in the seabed.

13 igh activity under extreme conditions in the seabed.

14 ail to sample this critical component of the seabed.

15 f the upper ocean's productivity to the deep seabed.

16 elated with disturbance and mortality on the seabed(2)(,)(3).

17 ition modification, of one of them, into the seabed along centuries.

18 sed to locate oil and gas reserves below the seabed and can be a major source of noise in marine envi

19 d deposits, etc., on the dynamic response of seabed and liquefaction potential, are examined and disc

20 The implementation of permanent networks of seabed and water-column-cabled (fixed) and docked mobile

21 t mass were detected 2 m or higher above the seabed and were not observed to settle over several hour

22 tion, potential pore water saturation in the seabed, and the potential occurrence of secondary reacti

23 e stresses and excess pore water pressure of seabed are derived with consideration of the effects of

24 tion of biota and trawl penetration into the seabed are highly correlated.

25 Clathrate hydrates reserved in the seabed are often dispersed in the pores of coarse-graine

26 Microbial cells in the seabed are thought to persist by slow population turnove

27 of occurrence of 68 megafauna morphotypes, a seabed area extending over 62,000 km(2) was divided into

28 Across all regions, 66% of seabed area was not trawled (status = 1), 1.5% was deple

29 Adult krill were found close to the seabed at all depths but were absent from fjords close i

30 rrently being developed by the International Seabed Authority (ISA)(1); however, a lack of experiment

31 tern Pacific, regulated by the International Seabed Authority (ISA).

32 on deep-seabed mining and the International Seabed Authority, whose mandates include regulation of a

33 e two-thirds of the ocean (the high seas and seabed below) located beyond national boundaries, and as

34 aled a slow growing benthic community on the seabed below.

35 emonstrated that brine could spread over the seabed, beyond the mixing zone, for up to several tens o

36 The scale and persistence of its impacts on seabed biota are unknown.

37 While the direct physical impact on seabed biota is well understood, no studies have defined

38 of methane hydrate has been found under the seabed, but the transportation and storage of methane ga

39 Brine often sinks and flows over the seabed by density currents; therefore, it may affect sed

40 ween upward migration and consumption at the seabed by methane-consuming microbes.

41 d have important implications for hazards to seabed cables, or deep-sea impacts of terrestrial climat

42 educing bacteria contribute substantially to seabed carbon cycling by oxidizing ~77 Tmol C(org) year(

43 rong increases in annual production of shelf seabed carbon in West Antarctic bryozoans.

44 mperature, salinity, sea surface height) and seabed characteristics (i.e., rugosity and depth).

45 model outputs based on ocean temperature and seabed characteristics to those that also incorporated s

46 losses are increasing potential for iceberg-seabed collisions, termed ice scour.

47 The surrounding seabed communities are dominated by lucinid bivalve moll

48 rmophilic endospores in the permanently cold seabed correlated with underlying seep conduits reveal g

49 entrations, 0.059-1.4 kg of olivine m(-2) of seabed could be supplied without posing risks for benthi

50 , degree of saturation, and shear modulus of seabed deposits, etc., on the dynamic response of seabed

51 living fish and a profound reorganization of seabed ecosystems since the nineteenth century industria

52 rial in Blue Carbon ecosystems contribute to seabed elevation and therefore buffers sea-level rise, w

53 itation and improve stock sustainability and seabed environmental status-while also showing seabed st

54 sediments from a range of continental shelf seabed environments and their current and predicted stab

55 subaqueous delta, contributing up to 70% of seabed erosion.

56 n penalties for seabirds, marine mammals and seabed fauna, and no benefit to fish stocks.

57 efuges were identified as remote and shallow seabed features, such as seamounts, submerged banks, and

58 The seabed "frontal zone", where temperature changed with fr

59 ospheric variability and local ice shelf and seabed geometry play fundamental roles in determining th

60 that the observed impacts resulted from high seabed ground accelerations driven by the air gun signal

61 impacts of OWF related pressures on selected seabed habitats, fish, seabird and mammal species.

62 the most widespread human activity affecting seabed habitats.

63 trawling is widespread globally and impacts seabed habitats.

64 afauna (animals > 1 cm) were quantified from seabed imagery collected around the excavation site befo

65 capture and analysis of 204 high resolution seabed images along emerging WAP fjords.

66 ophyllia or Flabellum) using high-resolution seabed images from the RV Polarstern cruise PS118.

67 ducted using Remotely Operated Vehicle (ROV) seabed images, three-dimensional photogrammetry models,

68 ng benthic prey composition through physical seabed impacts and (ii) by removing overall benthic cons

69 gic, which increases their susceptibility to seabed impacts.

70 Warming at the seabed in the Bellingshausen and Amundsen seas is linked

71 Seeds maintain contact with the seabed in the presence of strong turbulence: the larger

72 o wave reflection, the liquefaction depth of seabed induced by fully-reflected standing waves increas

73 and liquefaction potential of a poro-elastic seabed induced by partial standing waves with arbitrary

74 The porous seabed is modeled using Biot's theory describing the pro

75 an wave-induced dynamic response of a porous seabed is particularly important for coastal and geotech

76 Geophysical exploration of the seabed is typically done through seismic surveys, using

77 h near doubling of growth rates of Antarctic seabed life.

78 chaeal communities inhabiting the subsurface seabed live under strong energy limitation and have grow

79 of trawling impacts on whole communities of seabed macroinvertebrates on sedimentary habitats and de

80 Overall, the seabed mapping revealed the existence of a single reef s

81 We provide the first seabed mapping, and analyze the benthic cover and fish a

82 Five to ten years of seabed marker hit rate data (marker broken or moved) sho

83 n in the West Antarctic Peninsula (WAP), 225 seabed markers at 5-25 m depth have been surveyed and re

84 In 2003, grids of seabed markers, covering 225 m(2) , were established, su

85 microbial genomes and isolates from the deep seabed means that very little is known about the ecology

86 nvestigate biological impacts, variations in seabed megafauna (animals > 1 cm) were quantified from s

87 hat not only CO2 but also massive release of seabed methane was the driver for CIE and PETM.

88 ially exploitable metals are of interest for seabed mineral extraction in both the deep sea and shall

89 s to identify the causal connections between seabed mining activities and the affected ecosystem comp

90 outline the cause-effect pathways related to seabed mining activities to inform quantitative risk ass

91 o illustrate this approach, we focus on deep-seabed mining and the International Seabed Authority, wh

92 strate the approach in the Baltic Sea, where seabed mining been has tested and the ecosystem is well

93 Seabed mining regulations are currently being developed

94 Here, we examine the environmental risks of seabed mining using a causal, probabilistic network appr

95 om fishing, oil and gas extraction, and deep-seabed mining), environmental management and developing

96 s is needed for effective management of deep-seabed mining.

97 lations of the environmental impacts of deep-seabed mining.

98 al variability) in regions targeted for deep-seabed mining.

99 e history has been recorded for each m(2) of seabed monitored at 5-25 m for 13 years.

100 e history has been recorded for each m(2) of seabed monitored at 5-25 m for ~13 years.

101 ocean warming has made an expansive area of seabed more favorable for larval settlement.

102 By applying a qualitative analysis, seabed morphology is for the first time related to the d

103 causes physical disturbance, smothering the seabed near the well.

104 ent plumes generated by a pre-prototype deep seabed nodule collector vehicle operating in the abyssal

105 Seabed occupation will also incur in minor biodiversity

106 rol ocean heat transport onto and across the seabed of the Antarctic continental shelf towards the ic

107 n, removing 41% of biota and penetrating the seabed on average 16.1 cm.

108 ing 6% of biota per pass and penetrating the seabed on average down to 2.4 cm, whereas hydraulic dred

109 switch from brachiopods to bivalves as major seabed organisms following the Permian-Triassic mass ext

110 ies of microbial communities from three deep seabed petroleum seeps (3 km water depth) in the Eastern

111 sediment plumes near the release from a deep seabed polymetallic nodule mining preprototype collector

112 Here, we show a significant increase in seabed POM % cover (by ~1.05 times), and a large signifi

113 calcite dissolution in the top layer of the seabed, possibly causing calcite recrystallization.

114 degradation of organic matter in the anoxic seabed proceeds through a complex microbial network in w

115 ely accumulating on modern land surfaces and seabeds, provide unique information on the status of pre

116 an sink to the sea bottom and creep over the seabed, reaching up to 5 km from the discharge point.

117 n the impacts of different trawl-gear types, seabed recovery rates, and spatial distributions of traw

118 cosystems shaped by the emission of gas from seabed reservoirs.

119 on of the potential environmental impacts of seabed resource use, allowing iterative updating of the

120 ogical baseline study conducted on behalf of Seabed Resources Development Ltd.

121 ing importance as humankind moves to exploit seabed resources in ever-deepening waters of coastal oce

122 nthic biological baseline surveys for the UK Seabed Resources Ltd. exploration contract area (UK-1) i

123 ng waves so as to gain further insights into seabed responses and liquefaction risks posed by random

124 hat these long waves could cause much larger seabed responses than the short waves (eight times large

125 d by incident short wave groups affected the seabed responses.

126 ter temperatures at intermediate depth, as a seabed ridge blocks the deepest and warmest waters from

127 the northern flank of an east-west trending seabed ridge.

128 In this study we use a slo-corer to collect seabed samples with an undisturbed surface layer and a G

129 The approach was tested on a seabed sediment sample (Roskilde Fjord, Denmark) to demo

130 A fourth of the global seabed sediment volume is buried at depths where tempera

131 istance from haul out, proportion of sand in seabed sediment, and annual mean power were important pr

132 to hydrodynamic measurements and analyses of seabed sediments, the period when bed shear stress due t

133 mental to successful CO2 sequestration under seabed sediments.

134 tino helmets, recovered in the Mediterranean seabed, show unusual features with respect to the more c

135 th and mechanical and physical properties of seabed soil such as saturation, permeability and shear m

136 fluence of standing waves on breakwaters and seabed soil, and can provide some guidance for the desig

137 the bryozoan Fenestrulina rugula) dominating seabed spatial cover and drove a reduction in overall di

138 abed environmental status-while also showing seabed status was high (>0.95) in regions where catches

139 Furthermore, regional seabed status was related to the proportional area swept

140 f several pertinent parameters of ocean wave-seabed system, including reflection coefficient, phase l

141 ases 82.49% under certain conditions of wave-seabed system.

142 size across pelagic (midwater) and benthic (seabed) systems along anthropic gradients.

143 e revealed through variations in fluid flow, seabed temperature and seafloor bathymetry.

144 Geographic plots of seabed temperature change allowed the mapping of up to 8

145 transects perpendicular to the bank margin, seabed temperature change at individual sites ranged fro

146 Frontal movement had the greatest effect on seabed temperature in the 40 to 80 m depth interval.

147 or not surface processes influence the near-seabed temperature through deep meridional overturning c

148 i.e., wave-generated oscillatory flow at the seabed) than either barometric pressure or bottom water

149 t at a minimum depth below 2,000 m or at the seabed to minimize overlap with midwater species.

150 kely modified their environment generating a seabed topography and impacting ancient benthic communit

151 We report here seabed tracks made by Mesozoic marine reptiles, produced

152 ponse and liquefaction of the porous elastic seabed under partial standing ocean waves will help to b

153 udied pore water pressure responses in silty seabed under random wave action through a series of expe

154 ic faunal species collected in 2018 from the seabed under the Ekstrom Ice Shelf (EIS), Weddell Sea.

155 The seabed underneath is in complete darkness, and may be Ea

156 Seismic surveys map the seabed using intense, low-frequency sound signals that p

157 l, and machine learning methods characterize seabed variability and classify bottom-type.

158 ter column via gas bubbles released from the seabed was documented.

159 Nearly 30% of monitored seabed was hit each year, and just 7% of shallows were n

160 To reduce contact of the moorings with the seabed we attached small floats along the chain of a tra

161 ic Water (RAW) and amplified by a retrograde seabed, which together drove initial grounding line retr