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opennotspecifiedDec 2008View details →

FIGURE 2. E in Results of the DIVA 1 Expedition of RV " Meteor " (Cruise M 48: 1): Three new species of Munnopsidae Sars, 1864 from abyssal depths of the Angola Basin (Crustacea: Isopoda: Asellota) *

FIGURE 2. E. monodon sp. nov., male holotype ZMH K41791. a) head, lateral view; b) right antenna 1, dorsal view; c) right antenna, basal articles, dorsal view; d) left uropod, dorsal view.

FIGURE 3. A–C—Leiopathes montana n in A new species of Leiopathes (Anthozoa: Antipatharia) from the Great Meteor seamount (North Atlantic)

FIGURE 3. A–C—Leiopathes montana n. sp. Paratype [MNHN IK–2007–10]. D—L. glaberrima [IORAS IV–9–Ant–11– 001]. A—General view of the colony. Photo Pierre Lozouet. Scale 2 cm; B–D—polyps. Scale B 1 mm, C–D 2 mm.

FIGURE 6 in A new species of Leiopathes (Anthozoa: Antipatharia) from the Great Meteor seamount (North Atlantic)

FIGURE 6. Pont of incertion of terminal branchlet and relative spine size for six known species of Leiopathes, Scale: 1 mm: L. montana n. sp. Holotype [SMF–11.987]; L.glaberrima [IORAS IV–9–Ant–11–001]; L. expansa Johnson, 1899 – Holotype [MADJ]; L. acanthophora Opresko, 1998 Holotype [SAM H906]; L. secunda Opresko, 1998 Paratype [SAM H757]; L. grimaldii Roule, 1902 Syntype [MOM coll. n° 13 4017].

FIGURE 5 in A new species of Leiopathes (Anthozoa: Antipatharia) from the Great Meteor seamount (North Atlantic)

FIGURE 5. SEM of spines of Leiopathes spp. A–D, G–H Leiopathes montana n. sp. Paratype [MNHN IK-2007-10]. E–F, I–J: L.glaberrima [IORAS IV–9–Ant–11–001]. A–C, E–F spines at terminal branchlet, D—point of insertion of terminal branchlet. Scale 0.5 mm. G–J—closer view of spines, Scale 0.05mm. G, I—distal part of branchlets, H, J—middle of branchlet.

FIGURE 1 in A new species of Leiopathes (Anthozoa: Antipatharia) from the Great Meteor seamount (North Atlantic)

FIGURE 1. Leiopathes valdiviae (Pax, 1915). A–C after Pax 1922; D–E Holotype ZMB Cni 5672 photo Carsten Lüter; Ageneral view of the colony (40 cm high); B—spines at branchlet; C—polyps at terminal branchlet; D–E—close view of colony. Scale 2 cm.

FIGURE 2. Leiopathes montana n in A new species of Leiopathes (Anthozoa: Antipatharia) from the Great Meteor seamount (North Atlantic)

FIGURE 2. Leiopathes montana n. sp. Holotype [SMF–11.987] A—general view of the colony. Scale 5 cm; B—base of the colony. Scale 2 cm; C—fragment of the colony. Scale 2.5 cm.

FIGURE 4. Leiopathes montana n in A new species of Leiopathes (Anthozoa: Antipatharia) from the Great Meteor seamount (North Atlantic)

FIGURE 4. Leiopathes montana n. sp. Holotype [SMF-11.987]. SEM of spines. A–C terminal branchlet; D—branchlet of lower order. Scale 0.1 mm

FIGURE 11 in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica

FIGURE 11. Records of species belonging to the genera Bathycrinus and Porphyrocrinus in the South Atlantic and neighbouring Southern Ocean waters. Hachured area: Bathycrinus gracilis record locations, orange dots: Porphyrocrinus incrassatus or closely related specimen record locations, red dots: Bathycrinus australis record locations, yellow dots: Bathycrinus aldrichianus record locations, AP: Antarctic Peninsula, MAR: Mid Atlantic Ridge, WR: Walvis Ridge, WS: Weddell Sea. numbers indicate the number of specimens dredged at the given location.

FIGURE 9 in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica

FIGURE 9. Juvenile of Hyocrinus sp. (MNHN IE-2012-755) from Walvis Ridge. A: general view; B: tegmen with oral cone (oc) and anal cone (ac), one arm removed; C: lateral view of arm with sharp cover plates.

FIGURE 10 in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica

FIGURE 10. Porphyrocrinus cf. incrassatus. A–E: Walvis specimen (MNHN IE-2012-760); A: general view; B: aboral cup (B: basal ring, C1: proximalmost columnal, R: radial ring); C: detail of arm with muscular synarthry (m) and synostosis (s) Between brachial (Br) pairs; D–E: distal mesistele columnal of preserved stalk; F–G: Cape Basin stalk fragment (ZSM 20070046); F: proximal columnal (more distal position than D–E); G: distal columnal.

FIGURE 8 in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica

FIGURE 8. Juvenile of Hyocrinus bethellianus (MNHN IE-2012-756) from Walvis Ridge. A: oral cone with two proximal arms; B: lateral view of arm with cover plates; C: detail of orals with three hydropores at base of right oral (arrow).

FIGURE 6 in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica

FIGURE 6. Paratype of Feracrinus heinzelleri n. sp. (ZSM 0000/2). A: general view; B–C: distal columnals of preserved stalk.

FIGURE 5 in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica

FIGURE 5. Holotype of Feracrinus heinzelleri n. sp. (ZSM 0000/1), pinnule ossicles. A–C: views of the two proximalmost pinnulars (p1 and p2); A: proximal adoral view showing facet of muscular transverse synarthry; B: adoral view, proximal transverse synarthry at right, distal synostosis at left, p1 articulated to p2 by muscular synarthry (see D); C: distal adoral view showing flat synostosial facet; D: proximal synarthry of p2; E: pinnular in mid pinnule with synostosial facets; F: distal pinnular with muscular articulations; G–I: H-shaped genital plate; G: front view; H: lateral external view, ambulacral side at top; I: lateral internal view; J: profile view of genital, H-shaped and covering plates on genital pinnule; K: detailed view of covering plates; L-M: dissociated proximal cover plate. adp: additional lateral plates; cp: cover plates; gp: genital H-shaped plates; p: pinnular.

FIGURE 3. Dumetocrinus aff. antarcticus. A–E in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica

FIGURE 3. Dumetocrinus aff. antarcticus. A–E: specimen PS69/710-5; F: holotype of Dumetocrinus antarcticus (IRSNB 1897/1999-10131-589); D: symplexy of proximal mesistele; E–F: syzygies in distalmost stalk; an: anal sac; oc: oral cone.

FIGURE 4 in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica

FIGURE 4. Holotype of Feracrinus heinzelleri n. sp. (ZSM 0000/1). A: general view with ray broken at Br2/3; B: anal sac in CD interray; C: oral cone, view from broken A ray; D: lateral view of pinnule insertion on arm; E: hyposynostosial brachial showing flat synostosial facet; F: episynostosial brachial, distal facet showing pinnule socket (arrow head) and interbrachial muscular synarthry (arrow); G: lateral view of same brachial (side of pinnule insertion). Star: muscular articulation.

FIGURE 1 in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica

FIGURE 1. Stalk articulation in Bathycrinus aldrichianus (USNM E17896). A–B: proximal synarthries, C: mid mesistele synarthry, D–E: distal mesistele synarthries, F: dististele synarthry, A: small juvenile, B–D: medium-sized specimen, E–F: large specimen.

FIGURE 2 in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica

FIGURE 2. Bathycrinus australis (ZSM 20020004). A–G, I–J: large specimen; H, K–L: juvenile specimen; A–B: views of crown; C: distal stalk with bases of thin roots; D: progressive transition from dististele to mesistele; E: other distal stalk with large roots encrusting pebble; F–H: distal synarthries; I–L: mesistele synarthries.

opencc-by-4.0Dec 2019View details →

Specular Meteor Radar Observations of the Semidiurnal Tide in Northern Scandinavia and Northern Germany

The dataset contains specular meteor radar observations of the atmospheric semidiurnal tide in the mesosphere and lower thermosphere. The observations are from specular meteor radars located in Northern Scandinavia (Andenes, Kiruna, and Tromso) and Northern Germany (Collm and Juliusruh). The radar observations in Northern Scandinavia cover the years 1999, 2000, 2001, 2002, 2010, 2012, 2013, 2015, and 2019. Observations in Northern Germany cover the years 2010, 2012, 2013, 2015, and 2019. These data are in support of the publication "Migrating Semidiurnal Tide during the September Equinox Transition in the Northern Hemisphere."

opencc-by-4.0Nov 2021View details →

Annotated data of simultaneous broadband radio and optical emission of meteor trains imaged by LOFAR / AARTFAAC and CAMS

This data set contains simultaneous 30 - 60 MHz LOFAR / AARTFAAC12 radio observations and CAMS low-light video observations of +4 to -10 magnitude meteors at the peak of the Perseid meteor shower on August 12/13, 2020. 204 meteor trains were imaged in both the radio and optical domain.